Anthony Christopher Clark (born June 15, 1972) is an American professional baseball player and executive.

[5] Clark left college (and ended his basketball career) without finishing his business administration degree in order to focus on baseball.

The Detroit Tigers selected Clark out of high school with the second overall pick in the 1990 MLB draft.

Signed as a bench player, Clark filled in for the New York Yankees in 2004 after Jason Giambi was forced out of the lineup because of an injury, though he was replaced as the main first baseman by John Olerud late in the season.

During an August 28 game, Clark hit a career-high three home runs in an 18–6 rout of the Blue Jays in Toronto.

[15] Clark had a startling good performance on Opening Day 2009, hitting 2 home runs to lead the D-Backs to a victory over the Colorado Rockies; fellow switch-hitting teammate Felipe López also homered from both sides of the plate in the same game, making them the first teammates to do so on an Opening Day.

[18][19][20] Clark suffered the injury during spring training, and re-aggravated it in late April, leaving him unable to swing comfortably from the left side.

Clark struggled on defense as well, as on June 21 in his second game back he dropped a throw to him at first base with two outs in the ninth, allowing the winning run to score for Seattle.

Diamondbacks General Manager Josh Byrnes expressed an interest in keeping him with the organization, and Clark said he "would welcome the opportunity.

[28] Throughout his playing career, Clark was involved in the Major League Baseball Players Association (MLBPA) on various levels.

He was an active participant in the union's collective bargaining in 2002 and 2006 and in negotiations regarding Major League Baseball's drug policy.

[6] Following the death of Michael Weiner, Clark was unanimously voted executive director of Major League Baseball Players Association in December 2013.

[30] During the 2022 season, Clark and the MLBPA worked to unionize minor league baseball players.

[35] During his time in Detroit, fans and the media gave Clark the nickname "Tony the Tiger."