In 100 years of major league' baseball, there have been nearly 117,000 home runs hit in regulation games. Less than 2 percent of these, or 2150, have been hit in extra innings. Yet, these overtime homers have been very important. About 90-95% of the time they provide the winning margin.

    In 1975, for example, there were 49 extra inning homers hit. On two occasions the teams with the extra inning blasts lost; on two other occasions, both teams had extra inning roundtrippers.

    Home runs have been hit in all extra innings up to and including the 22nd. On June 24, 1962, Jack Reed, a third-string outfielder with the Yankees, hit his only major league homer off Phil Regan of the Tigers in the 22nd inning, giving Jim Bouton a 9-7 win. On July 17, 1914, Babe Adams of the Pirates set a record by not giving up a walk in a 21-inning game; however, he did give up a 2-run homer to Larry Doyle of the Giants and lost 3-1.

    You'd think a roundtripper in the 20th would be a game winner.  Tommy Harper hit one for Seattle on July 27, 1969, but Joe Lahoud of the Red Sox hit one with a man on in the bottom of the 20th and they won.

    Of the several other late, late home runs, two should be mentioned because they were hit by players usually identified as pitchers. On August 17, 1882, Providence beat Detroit 1-0 in 18 innings when Charles Radbourn, playing rightfield that day, hit one out of the park.  Monte Ward pitched the distance and won. On May 24, 1918, Smoky Joe Wood, also playing the outfield, hit one in the 19th to give the Indians a 3-2 win over George Mogridge of the Yankees.

    When it came to hitting grand slam home runs in extra innings, no player hit one later than the 16th. The only one to do that was Clyde Voilmer of the Red Sox in 1951. His was one of 73 grand slam homers hit in overtime since 1900. Four players did it twice: Cy Williams, Roger Mans, Tommy Davis, and Cookie Rojas. Here is the full list since 1900:

*Assisted by David Ross

Players Hitting Extra-Inning Grand Slams

   While some players scored a flock of overtime runs with grand slam homers, other players divided up the honors. On May 2, 1964, the Minnesota Twins bombed the Kansas City A's into submission with 4 consecutive homers in the 11th inning. They were hit by Tony Oliva, Bob Allison, Jimmie Hall, and Harmon Killebrew. The pitching victim of the first three was Dan Pfister. On June 8, 1965, the Braves got into the act in the 10th inning with 4 homers against the Cubs. In that inning, Joe Torre, Eddie Mathews, Henry Aaron, and Gene Oliver delivered the goods.

    There have been three occasions when players hit 2 extra inning homers in the same game. In 1943, Vern Stephens connected for the Browns in the 11th and 13th innings; in 1963 when Willie Kirkland was with the Indians, he hit homers in the 11th and 19th innings; and in 1966, Art Shamsky, inserted as a sub for the Reds in mid-game, hit one in the 10th and another in the 11th, to give him 3 for the game.

    When it came to hitting fourbaggers in extra innings, the real star was Willie Mays. He connected in overtime in 22 games. His first was a 3-run shot in 1951 when Willie was a 20-year-old rookie and his victim was 42-year-old Dutch Leonard. In June 1967 Willie walloped a grand slam in the 10th at the Astrodome. His most memorable was a swat in the 16th off Warren Spahn in July 1963, which gave Juan Marichal a 1-0 squeaker over the Braves' great southpaw.

    Here is a rundown on all 22 of Mays' overtime homers.

    Mays has a wide margin over other home run leaders when games go beyond the regulation 9. In comparison, Babe Ruth hit 16 in overtime, and Frank Robinson 15. Robby connected either in the 10th or 11th, while Mays was the only player to hit in each overtime frame up to the 16th. Here is a breakdown of the leaders.

Batters Hitting Most Homers in Extra Innings

*Leader

    Pitchers have also joined in the act of hitting extra inning home runs. It has been done 37 times since 1900, occurring all the way up to the 14th inning. Two pitchers did it twice: In 1911 Jack Coombs connected once in the 11th inning and once in the 14th. Dizzy Dean put his bat where his mouth was and hit 10th inning homers in both 1934 and 1935.

    When it comes to extra inning homers, however, pitchers are usually viewed from the other end of the delivery system. What pitcher served up the most extra inning homers? Was it Robin Roberts, who gave up a record total of 502 homers in his career? Or Warren Spahn?  Or Early Wynn? It was none of these. Roberts gave up only 7 overtime homers; Spahn 6, and Wynn 5. In the first place, Roberts and Wynn were starting hurlers who did not pitch much in overtime. Spahn did pitch more in extra innings, but seemed to get stronger as he went along.

    Who then pitches in extra innings? Relief hurlers, of course! The pitcher most frequently victimized by extra inning homers was El Roy Face. He is way out ahead of other pitchers with 21 overtime booboos.  Here is the rundown on Face.

    Although Willie Mays hit the most extra inning homers, 22, and El Roy Face gave up the most, 21, and they played against each other for 15 years, Willie never connected in overtime off the forkball ace of the Pirates.

    Ranking some distance behind Face in giving up boundary belts in extra frames were Hoyt Wilhelm, Lindy McDaniel, Johnny Sam, and Dick Radatz. Radatz is the surprise, giving up 12 extra inning roundtrippers in his short career. Sam split his career as a starter and reliever. The only full-time starter on the list is Gaylord Perry, and he pitches more extra innings than any of the current starters.

    Here is a breakdown of those pitchers who have given up the most home runs in extra innings.