Legendary baseball player Mark McGwire's 1999 Upper Deck Black Diamond Piece of History Mark McGwire PSA 9 POP3 No 10’s! trading card has surfaced on the secondary market with a price tag of $3,000.

Long, lanky, and bullishly strong, the Oakland A's Mark McGwire burst onto the Major League Baseball scene in his rookie season of 1987 by crushing a then rookie record 49 home runs. Sep 7, 1998 ...

JUPITER, Fla. — Jim Edmonds’ cell phone rang, awakening the St. Louis Cardinals’ centerfielder from a nap as the team rode a bus to Fort Lauderdale to play the Baltimore Orioles. It was Mark ...

ST. LOUIS — Mark McGwire is back in baseball, reunited with Tony La Russa as the St. Louis Cardinals’ hitting coach. La Russa agreed to return for a 15th year as manager Monday with a one-year ...

ST. LOUIS -- Mark McGwire is back in baseball, reunited with Tony La Russa as the St. Louis Cardinals' hitting coach. La Russa agreed to return for a 15th year as manager yesterday with a one-year ...

ST. LOUIS -- Call it the 3M class: Mark McGwire, Tim McCarver and Pepper Martin were revealed Friday as the 2017 induction class in the Cardinals Hall of Fame.