His best season was in 1992, when he posted a 7-1 record in 68 relief appearances. Rojas had an amazing 1.43 ERA in 100.2 innings, and a WHIP of 1.043. He primarily was the set up man for closer
John Wetteland (37 saves in 1992), but Rojas was able to accumulate 10 saves that season. On May 11, 1994, Rojas struck out three batters on nine pitches in the ninth inning of a 4-3 win over the New York Mets. Rojas became the 19th National League pitcher and the 28th pitcher in major-league history to accomplish an
immaculate inning. Mel Rojas joined the
Sinon Bulls of the
Chinese Professional Baseball League in Taiwan in 2004, played 11 games, posted 3 saves with 1.20 ERA and 14 strikeouts in 15 innings, but then was released by the team after the season ended. ==Personal life==