Denny Mack
First Baseman · Career Stats, Bio & Records (1871-1883)
Denny Mack was a first baseman who played in Major League Baseball from 1871 to 1883 for 7 teams, including the Rockford Forest Citys, a span of 13 seasons. In 373 career games, he hit .228 with 343 hits, 1 home runs, and 102 RBI. His career Pitcher PIV — Baseball Data Hub's era-adjusted measure of pitching impact — is 33.1.
- AVG (Batting Average):
- Hits divided by at bats. .300 is the traditional mark of an excellent hitter.
- HR (Home Runs):
- Hits on which the batter circled the bases and scored, almost always by clearing the outfield fence.
- RBI (Runs Batted In):
- Runs that scored as a direct result of a batter's plate appearance.
- OPS (On-Base Plus Slugging):
- On-base percentage plus slugging percentage, the quickest single summary of offensive value. .900 or better is star-level.
Data updated
- Position
- First Baseman
- Bats / Throws
- R / R
- Height / Weight
- 5'7" / 164 lb
- Died
- 4/10/1888 in Wilkes-Barre, PA, USA
- MLB Debut
- 1871-05-06
- Last Game
- 1883-09-27
Full name: Dennis Joseph Mack
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Career Batting Statistics
| G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | OBP | SLG | OPS | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 373 | 1,505 | 309 | 343 | 42 | 10 | 1 | 102 | 31 | 93 | 40 | .228 | .273 | .271 | .544 | -2,379 |
Career AVG .228 vs. league average .263 across their career seasons — 13.2% below league average.
Career OBP .273 vs. league average .284 across their career seasons — near league average.
Career SLG .271 vs. league average .339 across their career seasons — 20.0% below league average.
Career OPS .544 vs. league average .623 across their career seasons — 12.7% below league average.
Season-by-Season Batting
Click a stat to plot it across every season.
| Year | Team | Lg | G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | Lg AVG | Lg OBP | Lg SLG | Lg OPS | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1871 | RC1 | 25 | 122 | 34 | 30 | 7 | 1 | 0 | 17 | 12 | 8 | 7 | .246 | .286 (-14%) | .311 (-6%) | .383 (-17%) | .695 (-12%) | -200.2 | |
| 1872 | PH1 | 47 | 205 | 68 | 59 | 9 | 1 | 0 | 34 | 9 | 23 | 9 | .288 | .285 (+1%) | .296 (+21%) | .347 (-2%) | .644 (+9%) | 429.4 | |
| 1873 | PH2 | 48 | 205 | 55 | 60 | 5 | 0 | 0 | 19 | 6 | 15 | 9 | .293 | .290 (+1%) | .304 (+12%) | .357 (-11%) | .661 (-1%) | 94.4 | |
| 1874 | PH2 | 56 | 246 | 48 | 51 | 8 | 4 | 0 | 22 | 4 | 2 | 3 | .207 | .273 (-24%) | .282 (-24%) | .333 (-18%) | .615 (-21%) | -721.1 | |
| 1876 | SL3 | NL | 48 | 180 | 32 | 39 | 5 | 0 | 1 | 7 | 0 | 11 | 5 | .217 | .265 (-18%) | .277 (-6%) | .320 (-19%) | .598 (-13%) | -241.9 |
| 1880 | BFN | NL | 17 | 59 | 5 | 12 | 0 | 0 | 0 | 3 | 0 | 5 | 7 | .203 | .244 (-17%) | .267 (-1%) | .319 (-36%) | .586 (-20%) | -116.5 |
| 1882 | LS2 | AA | 72 | 264 | 41 | 48 | 3 | 1 | 0 | 0 | 0 | 16 | 0 | .182 | .248 (-27%) | .275 (-17%) | .329 (-39%) | .605 (-29%) | -944.7 |
| 1883 | PT1 | AA | 60 | 224 | 26 | 44 | 5 | 3 | 0 | 0 | 0 | 13 | 0 | .196 | .257 (-24%) | .285 (-16%) | .345 (-29%) | .631 (-23%) | -678.1 |
| Career · 8 seasons | 373 | 1,505 | 309 | 343 | 42 | 10 | 1 | 102 | 31 | 93 | 40 | .228 | — | — | — | — | -2,379 | ||
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.
Season-by-Season Pitching
Click a stat to plot it across every season.
| Year | Team | Lg | W | L | G | GS | CG | SHO | SV | IP | H | ER | BB | SO | ERA | Lg ERA | Pitcher PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1871 | RC1 | 0 | 1 | 3 | 1 | 1 | 0 | 0 | 13.0 | 20 | 5 | 3 | 1 | 3.46 | 4.22 (+18%) | 33.1 | |
| Career · 1 season | 0 | 1 | 3 | 1 | 1 | 0 | 0 | 13.0 | 20 | 5 | 3 | 1 | 3.46 | — | 33 | ||
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.
Fielding Statistics
Career Fielding Totals by Position
| Position | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|
| 1B | 173 | 105 | 1694 | 43 | 128 | 81 |
| 2B | 32 | 0 | 77 | 79 | 29 | 13 |
| OF | 13 | 0 | 9 | 1 | 3 | 0 |
| P | 3 | 1 | 1 | 2 | 0 | 0 |
| SS | 169 | 22 | 165 | 496 | 101 | 25 |
Season-by-Season Fielding
| Year | Team | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|---|
| 1871 | RC1 | 1B | 24 | 23 | 271 | 6 | 19 | 11 |
| 1871 | RC1 | OF | 1 | 0 | 1 | 0 | 0 | 0 |
| 1871 | RC1 | P | 3 | 1 | 1 | 2 | 0 | 0 |
| 1871 | RC1 | SS | 1 | 1 | 1 | 2 | 1 | 0 |
| 1872 | PH1 | 1B | 26 | 26 | 280 | 11 | 16 | 8 |
| 1872 | PH1 | SS | 21 | 21 | 22 | 56 | 25 | 0 |
| 1873 | PH2 | 1B | 42 | 0 | 429 | 8 | 29 | 20 |
| 1873 | PH2 | 2B | 1 | 0 | 6 | 2 | 0 | 0 |
| 1873 | PH2 | OF | 5 | 0 | 3 | 1 | 1 | 0 |
| 1873 | PH2 | SS | 3 | 0 | 2 | 12 | 2 | 0 |
| 1874 | PH2 | 1B | 56 | 56 | 488 | 8 | 55 | 31 |
| 1876 | SL3 | 2B | 5 | 0 | 14 | 10 | 4 | 2 |
| 1876 | SL3 | OF | 2 | 0 | 3 | 0 | 2 | 0 |
| 1876 | SL3 | SS | 41 | 0 | 42 | 114 | 20 | 6 |
| 1880 | BFN | 2B | 1 | 0 | 1 | 1 | 0 | 0 |
| 1880 | BFN | SS | 16 | 0 | 18 | 45 | 4 | 3 |
| 1882 | LS2 | 2B | 24 | 0 | 55 | 59 | 25 | 11 |
| 1882 | LS2 | OF | 5 | 0 | 2 | 0 | 0 | 0 |
| 1882 | LS2 | SS | 49 | 0 | 51 | 161 | 24 | 9 |
| 1883 | PT1 | 1B | 25 | 0 | 226 | 10 | 9 | 11 |
| 1883 | PT1 | 2B | 1 | 0 | 1 | 7 | 0 | 0 |
| 1883 | PT1 | SS | 38 | 0 | 29 | 106 | 25 | 7 |
Career Games by Position
Circle size = games played at each position.
| Position | Games |
|---|---|
| Pitcher | 3 |
| First Base | 173 |
| Second Base | 32 |
| Shortstop | 169 |
| Left Field | 4 |
| Center Field | 5 |
| Right Field | 4 |
College History
| School Name | City | State | Years Attended |
|---|---|---|---|
| Villanova University | Villanova | PA | 1866, 1867, 1868, 1869, 1870 |
Most Similar Players
Career comps based on counting + rate stats and primary position. Score is relative — closest peer anchors at ~98%.
Denny Mack (highlighted) compared to peers across the same era.
Denny Mack: the record in brief
Denny Mack's major league career runs from a debut on May 6, 1871 to a final game on September 27, 1883. The team column moves through the Rockford Forest Citys (1871), the Philadelphia Athletics (1872), the Philadelphia Whites (1873 to 1874), the St. Louis Brown Stockings (1876), the Buffalo Bisons (1880), the Louisville Eclipse (1882), and the Pittsburg Alleghenys (1883). Mack, born on March 14, 1850, in Mauch Chunk, PA, USA, is listed as a first baseman and batted and threw right-handed. Size on record: 164 pounds on a 5-foot-7 frame. Mack died on April 10, 1888, in Wilkes-Barre, PA, USA. The bio lists the given name Dennis Joseph.
Mack finished with 343 hits from 1,505 at bats in 373 games, which works out to .228; the totals also include 1 home run, 102 runs batted in, and 31 stolen bases. Mack got on base at a .273 rate and slugged .271 (.544 OPS).
Frequently Asked Questions about Denny Mack
- What years did Denny Mack play?
- Denny Mack played in Major League Baseball from 1871 to 1883.
- Was Denny Mack a pitcher?
- No. Denny Mack was a position player (First Baseman), though he did pitch in 3 career games.
- How many home runs did Denny Mack hit?
- Denny Mack hit 1 career home runs with 343 hits.
- What was Denny Mack's career batting average?
- Denny Mack batted .228 over his career, with 343 hits in 1,505 at bats.
- How many RBI did Denny Mack have?
- Denny Mack drove in 102 runs in his career.
- What was Denny Mack's career ERA?
- Denny Mack finished with a 3.46 career ERA, going 0-1 with 1 strikeouts.