Dave Koslo
Born: 3/31/1920 in Menasha, WI, USA
Died: 12/1/1975 in Menasha, WI, USA
MLB Debut: 1941-09-12 | Final Game: 1955-04-14
Bats: L | Throws: L | Height: 5'11" | Weight: 180 lbs
Full name: George Bernard Koslo
Biography
Dave Koslo was a professional baseball pitcher who played in Major League Baseball from 1941 until 1955. Born in 1920, he made his debut during a time when the sport was heavily influenced by the impending World War II, which significantly affected player availability and team rosters. Koslo established himself as a reliable arm in the pitching rotation, finishing his career with a record of 92 wins and 107 losses. His earned run average of 3.68 reflects his ability to keep games competitive, while his 606 strikeouts demonstrate his capability to overpower hitters during a period when pitching was both an art and a science.
Throughout his career, Koslo was known for his durability and versatility on the mound. He recorded a total of 22 saves, showcasing his effectiveness not only as a starter but also in relief roles. His contributions were particularly significant within the context of the post-war baseball landscape, where the return of veterans added depth to rosters and heightened competition. Koslo's career encapsulated the transition of baseball in the early 1950s, as the game began to evolve with new strategies and player dynamics, leaving a lasting legacy in the annals of baseball history.
Career Pitching Statistics
| W | L | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO | ERA | Pitcher PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 92 | 107 | 348 | 189 | 74 | 15 | 22 | 1591.3 | 1597 | 651 | 121 | 538 | 606 | 3.68 | 0 |
Season-by-Season Pitching
| Year | Team | Lg | W | L | G | GS | CG | SHO | SV | IP | H | ER | BB | SO | ERA | Pitcher PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1941 | NY1 | NL | 1 | 2 | 4 | 3 | 2 | 0 | 0 | 23.7 | 17 | 5 | 10 | 12 | 1.90 | 578.8 |
| 1942 | NY1 | NL | 3 | 6 | 19 | 11 | 3 | 1 | 0 | 78.0 | 79 | 44 | 32 | 42 | 5.08 | -579.1 |
| 1946 | NY1 | NL | 14 | 19 | 40 | 35 | 17 | 3 | 1 | 265.3 | 251 | 107 | 101 | 121 | 3.63 | 361.2 |
| 1947 | NY1 | NL | 15 | 10 | 39 | 31 | 10 | 3 | 0 | 217.3 | 223 | 106 | 82 | 86 | 4.39 | -2095.8 |
| 1948 | NY1 | NL | 8 | 10 | 35 | 18 | 5 | 3 | 3 | 149.0 | 168 | 64 | 62 | 58 | 3.87 | 1388.4 |
| 1949 | NY1 | NL | 11 | 14 | 38 | 23 | 15 | 0 | 4 | 212.0 | 193 | 59 | 43 | 64 | 2.50 | 4462.4 |
| 1950 | NY1 | NL | 13 | 15 | 40 | 22 | 7 | 1 | 3 | 186.7 | 190 | 81 | 68 | 56 | 3.91 | -252.9 |
| 1951 | NY1 | NL | 10 | 9 | 39 | 16 | 5 | 2 | 3 | 149.7 | 153 | 55 | 45 | 54 | 3.31 | -862.9 |
| 1952 | NY1 | NL | 10 | 7 | 41 | 17 | 8 | 2 | 5 | 166.3 | 154 | 59 | 47 | 67 | 3.19 | 1948.6 |
| 1953 | NY1 | NL | 6 | 12 | 37 | 12 | 2 | 0 | 2 | 111.7 | 135 | 59 | 36 | 36 | 4.76 | 759.3 |
| 1954 | BAL | AL | 0 | 1 | 3 | 1 | 0 | 0 | 0 | 14.3 | 20 | 5 | 3 | 3 | 3.14 | 137.7 |
| 1954 | ATL | NL | 1 | 1 | 12 | 0 | 0 | 0 | 1 | 17.3 | 13 | 6 | 9 | 7 | 3.12 | - |
| 1955 | ATL | NL | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0.0 | 1 | 1 | 0 | 0 | 0.00 | - |
Career Batting Statistics
| G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | OBP | SLG | OPS | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 350 | 516 | 31 | 56 | 12 | 0 | 3 | 30 | 1 | 36 | 222 | 0.109 | 0.168 | 0.149 | 0.317 | -3715.6 |
Season-by-Season Batting
| Year | Team | Lg | G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1941 | NY1 | NL | 4 | 9 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0.111 | 0.0 |
| 1942 | NY1 | NL | 19 | 25 | 4 | 3 | 2 | 0 | 0 | 1 | 0 | 2 | 10 | 0.120 | 0.0 |
| 1946 | NY1 | NL | 41 | 88 | 7 | 11 | 2 | 0 | 0 | 6 | 0 | 4 | 39 | 0.125 | -806.9 |
| 1947 | NY1 | NL | 39 | 78 | 6 | 10 | 1 | 0 | 0 | 2 | 0 | 8 | 37 | 0.128 | -670.6 |
| 1948 | NY1 | NL | 35 | 44 | 2 | 5 | 2 | 0 | 0 | 4 | 0 | 1 | 16 | 0.114 | 0.0 |
| 1949 | NY1 | NL | 39 | 69 | 4 | 10 | 2 | 0 | 2 | 7 | 0 | 5 | 27 | 0.145 | -456.5 |
| 1950 | NY1 | NL | 40 | 65 | 4 | 8 | 1 | 0 | 1 | 6 | 0 | 6 | 24 | 0.123 | -575.3 |
| 1951 | NY1 | NL | 39 | 50 | 1 | 5 | 1 | 0 | 0 | 1 | 1 | 6 | 18 | 0.100 | -482.7 |
| 1952 | NY1 | NL | 41 | 54 | 3 | 2 | 1 | 0 | 0 | 3 | 0 | 3 | 31 | 0.037 | -723.6 |
| 1953 | NY1 | NL | 37 | 30 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 11 | 0.033 | 0.0 |
| 1954 | BAL | AL | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.000 | 0.0 |
| 1954 | ATL | NL | 12 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.000 | 0.0 |
| 1955 | ATL | NL | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | 0.0 |
Postseason Statistics
Playoff Career Batting
| G | AB | R | H | 2B | 3B | HR | RBI | BB | SO | AVG |
|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.000 |
Playoff Batting by Year
| Year | Round | Team | G | AB | R | H | 2B | 3B | HR | RBI | BB | SO | AVG |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1951 | WS | NY1 | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.000 |
Playoff Career Pitching
| W | L | G | GS | SV | IP | H | ER | BB | SO | ERA |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 2 | 2 | 0 | 15.0 | 12 | 5 | 7 | 6 | 3.00 |
Playoff Pitching by Year
| Year | Round | Team | W | L | G | GS | SV | IP | H | ER | BB | SO | ERA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1951 | WS | NY1 | 1 | 1 | 2 | 2 | 0 | 15.0 | 12 | 5 | 7 | 6 | 3.00 |
Fielding Statistics
Career Fielding Totals by Position
| Position | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|
| P | 348 | 1 | 75 | 307 | 14 | 23 |
Season-by-Season Fielding
| Year | Team | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|---|
| 1941 | NY1 | P | 4 | 0 | 0 | 3 | 1 | 0 |
| 1942 | NY1 | P | 19 | 0 | 1 | 13 | 1 | 0 |
| 1946 | NY1 | P | 40 | 0 | 10 | 61 | 3 | 1 |
| 1947 | NY1 | P | 39 | 0 | 13 | 36 | 2 | 2 |
| 1948 | NY1 | P | 35 | 0 | 8 | 24 | 0 | 1 |
| 1949 | NY1 | P | 38 | 0 | 7 | 39 | 0 | 4 |
| 1950 | NY1 | P | 40 | 0 | 5 | 37 | 2 | 3 |
| 1951 | NY1 | P | 39 | 0 | 7 | 38 | 0 | 2 |
| 1952 | NY1 | P | 41 | 0 | 16 | 33 | 4 | 7 |
| 1953 | NY1 | P | 37 | 0 | 7 | 22 | 1 | 3 |
| 1954 | BAL | P | 3 | 1 | 1 | 1 | 0 | 0 |
| 1954 | ML1 | P | 12 | 0 | 0 | 0 | 0 | 0 |
| 1955 | ML1 | P | 1 | 0 | 0 | 0 | 0 | 0 |
Career Games by Position
| Position | Games |
|---|---|
| Pitcher | 348 |