In this series, I look at one player per year from 1991-the present who came out of nowhere or had a great year that no one really noticed or expected.
1998 - JIM CORSI
Jim Corsi came to the Red Sox before the 1997 season, in what was actually his second tour of duty with the organization. He was in their minor league system in 1985 through 1986 before being released and catching on with Oakland. Corsi was a decent bullpen option in 1997 but was even better in 1998 and was the unheralded hero of the relief corps, which already featured Tom Gordon and Dennis Eckersley.
Corsi was a 1.3 WAR relief pitcher in 1998, going 3-2 with a 2.59 ERA and 49 strikeouts versus 23 walks in 66 innings over 59 games. Corsi finished nine games for Boston and notched two saves. His WHIP was a decent 1.227.
Corsi did return in 1999, but at 37, he was ineffective and ultimately released. He found his way into the Baltimore bullpen and for 13 games was relatively decent, but that was it for his Major League career.