Cox was a key ingredient in the Cardinals’ 1985 pennant as he went 18-9 in just his second full season. He made it back to the Fall Classic with St. Louis in 1987, where he picked up a win and two defeats, including a loss in the decisive Game Seven while working in relief of starter Joe Magrane.
Possessing only an average fastball, he relied heavily on a great change-up. He spent stretches on the disabled list in 1986, ’87, most of 1988, and all of 1989 with bone chips, a broken foot, and tendinitis. He finally resurfaced with Philadelphia in 1991, and made it back to the post-season as a reliever with the Pirates in 1992. Cox finished up his career as bullpen mainstay for the Blue Jays, tossing five scoreless innings in the 1993 ALCS and pitching in his third World Series that October.