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|Born: December 9, 1944|
|April 10, 1968, for the Washington Senators|
|Last MLB appearance|
|June 6, 1982, for the Philadelphia Phillies|
|Runs batted in||481|
|Career highlights and awards|
Del Unser played baseball at both Eastern Illinois University and Mississippi State University. he was a three year starter for Mississippi State, and in both 1965 and 1966, was selected first team All-SEC as an outfielder. In both seasons he helped Mississippi State to a conference championship, but 1966 may have been a breakout year. He led the team runs with 31, hits with 39, and his .333 batting average. That same year he was also named to The Sporting News All-American. In 1997, the university induced Unser into the school's hall of fame.
The Minnesota Twins had selected Unser in the June draft in 1965, but Unser did not sign with them, nor did he sign with the Pittsburgh Pirates after they selected him in the winter draft in 1966. However, Unser was drafted in the first round of the June 1966 draft by the Washington Senators and signed with them, reporting to their Double-A team, the York White Roses of the Eastern League. Unser struggled his first season, in the minors, batting only .220. However, management in Washington saw something in Unser, and in 1968, he made the leap from double-A to the majors. At the age of 23, on April 10th, 1968, Unser made his MLB debut, against the team that had drafted him a year earlier, the Minnesota Twins. Unser got a hit in his major league debut. 
Unser played for the Washington Senators from 1968 to 1971. In his first season, he had a five-hit game (four singles and a home run) against the Oakland Athletics on August 20, 1968. In the 1969 season, Unser led the American League in triples, with 8. Unser stayed with Washington when the team made its move to Texas to become the Rangers. However, he did not play a game for the franchise in its new city. The Rangers dealt Unser to the Cleveland Indians as part of a seven player deal in 1972. After one season, Unser was traded again, this time to Philadelphia, along with career minor leaguer Terry Wedgewood in exchange for outfielders Roger Freed and Oscar Gamble. 
He also played for the Philadelphia Phillies from 1973 to 1974. After the 1974 season, Unser was sent to the New York Mets along with John Stearns and Mac Scarce in exchange for Tug McGraw, Don Hahn and Dave Schneck. He hit .294 for the Mets in 1975, and might have hit .300 that year, but sustained a late-season rib injury that affected his swing. He was hit by a pitch early in the 1976 season and sustained an arm injury. He was traded to the Montreal Expos during the season. In 1977, he began to be used primarily as a pinch-hitter, and also split his time on the field between the outfield and first base. that winter Unser became a free agent. He returned to the Phillies from 1979 to 1982.
Unser played a key role in the Phillies' 1980 World Series victory over the Kansas City Royals, getting crucial doubles to drive in runs as a pinch hitter in the late innings of Games 2 and 5. The first cut the Royals' lead from 4-2 to 4-3 in the bottom of the 8th inning, and scored the tying run before Mike Schmidt drove in the winning run with a double for a 2-0 Series lead for Philadelphia. In Game 5 in Kansas City and with the series tied at two games apiece, the Phillies were at bat in the top of the ninth and trailing by a score of 3-2. After Schmidt led off with a single, Unser again delivered a double to score Schmidt with the tying run. He later scored the go-ahead run on Manny Trillo's single as the Phillies won the game 4-3 to take a 3-2 lead in the World Series back to Philadelphia, where they closed it out in the 6th game.
Unser played a few more years in Philadelphia after that World Series win. However, on June 8th, 1982, the Phillies released Unser, ending his stay in the major leagues..
Unser's career totals include 1,799 games played, 1,344 hits, 87 home runs, 481 runs batted in, and a lifetime batting average of .258. Unser, along with Lee Lacy, is one of two players to hit three pinch-hit home runs in consecutive at-bats.
When Unser played in the minors, one of his coaches was the legendary Harry Walker, aka "Harry The Hat". Though Unser never hit in the pros the way he did in college, he was a defense star. After he was released by the Phillies, Unser ran a sporting goods store, and then returned to baseball as a coach returning to the city of Philadelphia. Hired in 1983 by Team President Bill Giles to be a roving minor league instructor. When John Felske became the manager in 1985, Unser was offered the first role of first base coach and hitting coach and jumped at the chance for the role. After a few years of being a coach, Phillies general manager Lee Thomas offered Unser the role of farm director, a position he would hold for the next nine seasons. In his time in that role, Unser would over see the development of future Phillies stars like Mike Lieberthal, Jimmy Rollins and Scott Rolen. . After being the farm director, he became a scout for the Phillies. .
- List of Major League Baseball annual triples leaders
- List of second-generation Major League Baseball players
- "McLain hits sour note, Business wrong turn". Pittsburgh Press. UPI. 21 August 1968. p. 63. Retrieved 7 July 2010.
- McCarron, Anthony (June 3, 2015). "Where are they now? Del Unser once traded to Mets for McGraw". New York Daily News. Retrieved October 26, 2016.
- Career statistics and player information from MLB, or ESPN, or Baseball-Reference, or Fangraphs, or The Baseball Cube, or Baseball-Reference (Minors), or Retrosheet
- Del Unser at SABR (Baseball BioProject)
- Del Unser at Ultimate Mets Database
- Del Unser at Pura Pelota (Venezuelan Professional Baseball League)