He played in Major League Baseball (MLB) for the San Diego Padres, Cleveland Indians, and Toronto Blue Jays.

[3] The relocation fell through and Freisleben was called up to San Diego early in the 1974 season to join Bill Greif, Randy Jones & Dan Spillner in one of the best young starting rotations in the National League.

[4] Freisleben had two shutouts and six complete games on his way to nine victories his rookie season, but his most impressive performance came in a no decision against the Cincinnati Reds.

In the second inning, Freisleben induced a ground ball from Cincinnati Reds right fielder Ken Griffey that was misplayed by shortstop Enzo Hernandez.

Hernandez fielded the ball cleanly, however, his throw sailed past Ivie at first, allowing Morgan to scores, and Bench to advance to third.

Rich Folkers replaced Freisleben on the mound, and allowed a single to Bench that plated a seventh unearned run in the inning.

[7] Freisleben earned back-to-back complete game victories over the Chicago Cubs on May 11[8] & 17[9] to improve to 3-3 on the season, but from there, his hard luck returned.

Lou Brock tied & broke Ty Cobb's all-time stolen base record against Freisleben on August 29, 1977.

Freisleben performed adequately in that role (2-2, 4.78 ERA) until a blown save against the Kansas City Royals on August 6.

Freisleben was called out of the bullpen eleven times over the rest of the season, all losses, and most of them out of reach for the team that went on to lose 109 games.

Freisleben was released at the end of the season, and attended Spring training with the California Angels in 1980, but failed to make the team.