Jhoulys Chacin still has a long way to go before he can be considered the ace of the Colorado Rockies staff, but last night, even in a losing effort, he offered something positive to take with him into next season. Chacin threw seven strong innings in his last start of 2011, but it wasn’t enough in a 3-1 Rockies loss at San Francisco. The 23 year-old right-hander allowed two runs on eight hits, striking out three and walking just one. He finishes the season with an 11-14 record and 3.62 ERA. Offense was once again hard to come by for the Rockies, with Mark Ellis’ RBI single in the top of the eighth inning producing their only run. With two more games left for the Rockies, one more loss would ensure them their worst season since 2005. The Rockies and Giants play again tonight in San Francisco, with first pitch at 9:15.