[1] Pierce was drafted by the Atlanta Braves in the third round of the 1969 Major League January Draft-Secondary Phase.

[3] Pierce made his major league debut on April 27 and tallied only one hit for a .050 batting average in his brief 11 game call-up before being sent back to Richmond.

[2] In 1974, Pierce told the Braves he did not want to return to Richmond and was sent instead to the Charros de Jalisco of the Mexican Pacific League.

[6][4] Pierce began the 1975 season with Detroit's Double A Evansville Triplets of the American Association, where he hit .282 with nine home runs and 25 RBIs in 36 games.

[2] Detroit's first baseman Nate Colbert struggled early in the 1975 season, and Pierce was called up at the end of May.

"[4] On June 15, 1975, the Tigers sold Colbert to the Montreal Expos,[8] and Pierce became the team's starting first baseman.

[5] In his short time with the Tigers, he committed 13 errors at first base, ranking third among American League first basemen for the entire 1975 season.

[5] In early August 1975, Pierce lost the job as Detroit's starting first baseman to Danny Meyer.

In 1978, he played for the San Jose Missions, and in 1979 for the Spokane Indians, both Triple-A farm clubs of the Mariners, without getting to the majors.

Jack returned to form somewhat in 1980; while his average was low and he slugged under .500, he did hit a league-best 17 homers in the strike-shortened season, taking his second home run crown.

In 1984 the Mexican League began using the lively Commando ball and Pierce took advantage better than most – he raised his average 118 points to .364 with an OBP around .438 and a slugging of .659.

The old mark had been 46 by Héctor Espino – in addition to Pierce, Nick Castaneda (53) and Willie Aikens (46) at least matched the old record.