What years did Clayton Mortensen play?

Clayton Mortensen played in Major League Baseball from 2009 to 2013.

Was Clayton Mortensen a pitcher?

Yes. Clayton Mortensen pitched in the major leagues, recording 6 wins and 112 strikeouts.

How many home runs did Clayton Mortensen hit?

Clayton Mortensen hit 0 career home runs.

What teams did Clayton Mortensen play for?

Clayton Mortensen played for 4 teams: the St. Louis Cardinals (2009), the Oakland Athletics (2009–2010), the Colorado Rockies (2011), and the Boston Red Sox (2012–2013).

What were Clayton Mortensen's career stats?

In 74 games, Clayton Mortensen went 6-11 with a 4.68 ERA, 112 strikeouts, and 167.1 innings pitched.

What was Clayton Mortensen's salary?

Clayton Mortensen's recorded salary was $504,500 in 2013.

What position did Clayton Mortensen play?

Clayton Mortensen played primarily as a pitcher, the position where he appeared in the most games.

How tall was Clayton Mortensen and how much did he weigh?

Clayton Mortensen was listed at 6 feet 4 inches and 185 pounds.

What was Clayton Mortensen's career ERA?

Clayton Mortensen finished with a 4.68 career ERA, going 6-11 with 112 strikeouts.

How many strikeouts did Clayton Mortensen have?

Clayton Mortensen recorded 112 career strikeouts.

Is Clayton Mortensen in the Hall of Fame?

No. Clayton Mortensen has not been inducted into the National Baseball Hall of Fame.

Clayton Mortensen

Pitcher · Career Stats, Bio & Records (2009-2013)

Clayton Mortensen was a pitcher who played in Major League Baseball from 2009 to 2013 for 4 teams, including the St. Louis Cardinals, a span of 5 seasons. Across 74 career appearances, he went 6-11 with a 4.68 ERA and 112 strikeouts.

W (Wins):: Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
ERA (Earned Run Average):: Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
SO (Strikeouts):: For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
WHIP (Walks and Hits per Inning Pitched):: Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.

Data updated October 15, 2026

W–L 6–11

ERA 4.68

WHIP 1.44

SO 112

Pitcher PIV -4804.7

Position: Pitcher
Bats / Throws: R / R
Height / Weight: 6'4" / 185 lb
Born: 4/10/1985 in Rexburg, ID, USA
MLB Debut: 2009-06-29
Last Game: 2013-06-10

Full name: Clayton Grant Mortensen

📊 Compare This Player 📈 View Career Timeline

Career Pitching Statistics

Clayton Mortensen — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
6	11	74	13	0	0	0	167.1	167	87	26	74	112	4.68	-4804.7

Career ERA 4.68 vs. league average 4.04 across their career seasons — 15.7% worse than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Clayton Mortensen — Season-by-Season Pitching
Year	Team	Lg	W	L	G	GS	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
2009	SLN	NL	0	0	1	0	3.0	5	2	1	2	6.00	—	0.0
2009	OAK	AL	2	4	6	6	27.2	37	24	12	11	7.81	4.32 (-81%)	-1277.9
2010	OAK	AL	0	0	1	1	6.0	6	3	2	7	4.50	—	0.0
2011	COL	NL	2	4	16	6	58.1	55	25	24	30	3.86	3.94 (+2%)	-2037.7
2012	BOS	AL	1	1	26	0	42.0	32	15	19	41	3.21	4.01 (+20%)	-759.1
2013	BOS	AL	1	2	24	0	30.1	32	18	16	21	5.34	3.87 (-38%)	-730.0
Career · 6 seasons			6	11	74	13	167.1	167	87	74	112	4.68	—	-4,805

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Career Batting Statistics

Clayton Mortensen — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
74	16	1	0	0	0	0	1	0	1	11	.000	.056	.000	.056	0

Career AVG .000 vs. league average .257 across their career seasons — 100.0% below league average.

Career OBP .056 vs. league average .323 across their career seasons — 82.8% below league average.

Career SLG .000 vs. league average .404 across their career seasons — 100.0% below league average.

Career OPS .056 vs. league average .727 across their career seasons — 92.4% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Clayton Mortensen — Season-by-Season Batting
Year	Team	Lg	G	AB	R	RBI	BB	SO	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
2009	SLN	NL	1	1	0	0	0	0	.000	—	—	—	—	0.0
2009	OAK	AL	6	0	0	0	0	0	.000	—	—	—	—	0.0
2010	OAK	AL	1	0	0	0	0	0	.000	—	—	—	—	0.0
2011	COL	NL	16	13	1	1	1	9	.000	—	—	—	—	0.0
2012	BOS	AL	26	1	0	0	0	1	.000	—	—	—	—	0.0
2013	BOS	AL	24	1	0	0	0	1	.000	—	—	—	—	0.0
Career · 6 seasons			74	16	1	1	1	11	.000	—	—	—	—	0

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Game Log & Splits

View full game log (148 games) →

Per-game data from Retrosheet (regular season, through 2025).

Batting — Home / Away

Clayton Mortensen — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	40	8	1	0	0	0	.000
Away	34	8	0	0	0	1	.000

Pitching — Home / Away

Clayton Mortensen — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	40	88.2	93	50	35	60	5.08
Away	34	78.2	74	37	39	52	4.23

Last 10 Games — Batting

Clayton Mortensen — Last 10 Games — Batting
Date	Tm	Opp	Res	AB	SO
2013-06-10	BOS	TBR	W	0	0
2013-06-08	BOS	LAA	L	0	0
2013-06-04	BOS	TEX	W	0	0
2013-05-31	BOS	NYY	L	0	0
2013-05-30	BOS	PHI	W	1	1
2013-05-27	BOS	PHI	W	0	0
2013-05-23	BOS	CLE	L	0	0
2013-05-20	BOS	CHW	L	0	0
2013-05-18	BOS	MIN	W	0	0
2013-05-16	BOS	TBR	W	0	0

Last 10 Games — Pitching

Clayton Mortensen — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO	HR
2013-06-10	BOS	TBR	—	1.0	1	0	0	0	1	0
2013-06-08	BOS	LAA	—	1.2	4	2	1	0	0	0
2013-06-04	BOS	TEX	—	0.2	4	2	2	1	2	1
2013-05-31	BOS	NYY	—	1.0	0	0	0	0	1	0
2013-05-30	BOS	PHI	—	0.2	0	0	0	0	0	0
2013-05-27	BOS	PHI	—	1.1	1	1	1	1	0	0
2013-05-23	BOS	CLE	—	2.0	5	5	5	3	0	0
2013-05-20	BOS	CHW	—	1.0	0	0	0	0	0	0
2013-05-18	BOS	MIN	—	0.2	2	0	0	1	0	0
2013-05-16	BOS	TBR	—	0.1	1	1	1	2	0	0

Fielding Statistics

Career Fielding Totals by Position

Clayton Mortensen — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	74	13	13	25	3	1

Season-by-Season Fielding

Clayton Mortensen — Season-by-Season Fielding
Year	Team	Pos	G	GS	PO	A	E	DP
2009	SLN	P	1	0	0	0	0	0
2009	OAK	P	6	6	2	3	1	0
2010	OAK	P	1	1	0	1	0	0
2011	COL	P	16	6	3	9	1	1
2012	BOS	P	26	0	5	8	0	0
2013	BOS	P	24	0	3	4	1	0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Clayton Mortensen — Career Games by Position
Position	Games
Pitcher	74

Salary History

Clayton Mortensen's recorded salaries total $504,500 over 1 season, in 2013. This total is partial: the salary data covers 1985 to 2016, and Mortensen's career ran from 2009 to 2013. No salary is recorded for 2009, 2010, 2011, and 2012.

Clayton Mortensen — Salary History
Year	Team	League	Salary
2013	BOS	AL	$504,500
Total recorded salary (partial)			$504,500

College History

Clayton Mortensen — College History
School Name	City	State	Years Attended
Gonzaga University	Spokane	WA	2006, 2007

Clayton Mortensen: the record in brief

Clayton Mortensen's major league career runs from a debut on June 29, 2009 to a final game on June 10, 2013. Mortensen played for the St. Louis Cardinals (2009), the Oakland Athletics (2009 through 2010), the Colorado Rockies (2011), and the Boston Red Sox (2012 to 2013). Born on April 10, 1985, in Rexburg, ID, USA, Mortensen is listed as a pitcher and threw and hit right-handed. Mortensen's listed size is 185 pounds on a 6-foot-4 frame. Mortensen's full given name, per the bio, is Clayton Grant Mortensen.

Mortensen went 6-11 with a 4.68 ERA in 74 games, 13 of them starts. The same table counts 112 strikeouts. The league ERA over Mortensen's seasons was 4.04, so the 4.68 figure ran 15.7% worse than average. In 2012, one of the busiest seasons, Mortensen posted a 3.21 ERA; the league figure that year was 4.01.

Mortensen appears at one position only: pitcher, in 74 games. Fielding on the mound produced 13 putouts and 25 assists against 3 errors.

Frequently Asked Questions about Clayton Mortensen

What years did Clayton Mortensen play?: Clayton Mortensen played in Major League Baseball from 2009 to 2013.
Was Clayton Mortensen a pitcher?: Yes. Clayton Mortensen pitched in the major leagues, recording 6 wins and 112 strikeouts.
How many home runs did Clayton Mortensen hit?: Clayton Mortensen hit 0 career home runs.
What teams did Clayton Mortensen play for?: Clayton Mortensen played for 4 teams: the St. Louis Cardinals (2009), the Oakland Athletics (2009–2010), the Colorado Rockies (2011), and the Boston Red Sox (2012–2013).
What were Clayton Mortensen's career stats?: In 74 games, Clayton Mortensen went 6-11 with a 4.68 ERA, 112 strikeouts, and 167.1 innings pitched.
How much did Clayton Mortensen earn in his career?: Clayton Mortensen's recorded salaries total $504,500 over 1 season, in 2013. This total is partial: the salary data covers 1985 to 2016, and Mortensen's career ran from 2009 to 2013. No salary is recorded for 2009, 2010, 2011, and 2012.
What was Clayton Mortensen's salary?: Clayton Mortensen's recorded salary was $504,500 in 2013.
What position did Clayton Mortensen play?: Clayton Mortensen played primarily as a pitcher, the position where he appeared in the most games.
How tall was Clayton Mortensen and how much did he weigh?: Clayton Mortensen was listed at 6 feet 4 inches and 185 pounds.
What was Clayton Mortensen's career ERA?: Clayton Mortensen finished with a 4.68 career ERA, going 6-11 with 112 strikeouts.
How many strikeouts did Clayton Mortensen have?: Clayton Mortensen recorded 112 career strikeouts.
Is Clayton Mortensen in the Hall of Fame?: No. Clayton Mortensen has not been inducted into the National Baseball Hall of Fame.