Colorado Rockies All-Time ERA Leaders
The Colorado Rockies entered Major League Baseball in 1993, the same year as the other expansion team, the Florida Marlins. The Rockies have been to the playoffs three times, and the World Series once, losing to Boston in a four-game sweep in 2007. The Rockies also play in a very hitter-friendly park due to the thin Denver air, but that means it’s not exactly a good place for pitchers. Still, the Rockies have fielded some good ones. Here is a short list of the Rockies’ all-time leaders in ERA to date:
Ubaldo Jiminez (3.78)—Ubaldo Jiminez is one of the Rockies’ bright young stars as I write this in 2010. He began his major league career in 2006 and has been with the Rockies his entire career so far. Jiminez is the team’s leader in ERA so far with a 3.78 mark, and his best season so far was 2009. That year, Jiminez went 15-12 with a career best 3.47 ERA and 198 strikeouts in 218 innings of work. The wins and strikeouts were both career highs as well.
Aaron Cook (4.33)—Aaron Cook has been with Colorado since 2002 and he ranks second in franchise history with a 4.33 ERA. Cook had a career best 3.67 earned run average in 2005, but his best overall season was probably 2008. That year, Cook went 16-9 (career high in wins) with a 3.96 ERA and 96 strikeouts (also a career best).
Armando Reynoso (4.65)—Armando Reynoso pitched for the Rockies early on, from 1993 to 1996. He ranks third in the team’s history with a 4.65 ERA. Reynoso posted a career best 3.82 mark while with the Mets in 1998, but his best overall season was probably spent with Colorado in 1993. That year, Reynoso went 12-11 (career high in wins, and 18% of the team’s 67 wins) with a 4.00 ERA and career high 117 strikeouts.
Jeff Francis (4.74)—Jeff Francis has spent his entire career in Colorado, from 2004 to 2008 (he missed 2009 with an injury), and he ranks fourth in Rockies’ history with a 4.74 ERA. Francis had a career best 4.16 earned run average in 2006, but his best season was arguably 2007. That year, Francis posted a 4.22 ERA with career highs in wins (17-9) and strikeouts (165).
Jason Jennings (4.74)—Jason Jennings pitched for the Rockies from 2001 to 2006 and ranks tied for fourth in franchise history with Francis, with a 4.74 ERA. Jennings had a career best 3.78 ERA despite a 9-13 record in 2006. But his best overall season was probably 2002, when he had a career high in wins (16-8) with a 4.52 ERA and 127 strikeouts.