Tony Gwynn delivers Dodgers' game-winner in a pinch Can anyone catch the Dodgers? An eighth-inning pinch-hit single by Tony Gwynn Jr.drove in the go-ahead run in the Dodgers' 2-1 victory over the Colorado Rockies at Dodger Stadium on Saturday night and maintained the Dodgers' six-game lead over the second-place San Francisco Giants in the National League West. The game was won by the very small-ball tactics that arguably cost them a game Tuesday against the Giants. First baseman James Loney started the eighth inning by reaching base on an infield single and was moved into scoring position on a sacrifice bunt by catcherA.J. Ellis. Gwynn singled to left field, Loney scored and Kenley Jansen earned his first save since replacing Javy Guerra as closer. The Dodgers improved to 22-11, including a major league-best 14-3 at home. The Dodgers not only have the best record in the division, they might also have the healthiest team. Matt Kemp, still appearing hindered by a hamstring problem, isn't playing at full speed. Left fielder Juan Rivera, utilityman Jerry Hairston Jr. and reliever Matt Guerrier are on the disabled list. But their division rivals are in far worse shape. Three of the five members of the Rockies' projected rotation are on the disabled list. Jeremy Guthrie is expected back Tuesday but ace Jorge De La Rosa is still working his way back from an elbow operation he underwent last year. Giants closer Brian Wilson had a similar surgery last month and is lost for the season. Setup man Jeremy Affeldt has been sidelined because of a knee injury, further depleting their bullpen. All-Star third baseman Pablo Sandoval broke a wrist and isn't expected back until the end of next month. Second baseman Freddy Sanchez is yet to return from a shoulder operation last year. Key players are also missing from the Arizona Diamondbacks. Daniel Hudson, who won 16 games last season, is out because of shoulder issues. Center fielder Chris Young is recovering from a different type of shoulder ailment; he crashed into a wall last month. Shortstop Stephen Drew, who broke an ankle last year, remains in extended spring training. Reliever Takashi Saito still hasn't pitched this season because of a calf problem. The San Diego Padres? They might be the worst team in baseball and will probably finish last regardless of their health status. On Saturday night, the Dodgers faced one of the Rockies' two active starting pitchers in Juan Nicasio. The 25-year-old right-hander beat the Dodgers in Denver on April 30 when he held them to two runs and nine hits over six innings. Away from the thin air of Coors Field, Nicasio was even harder to hit this time. Over seven innings, Nicasio was charged with only one run and five hits. He struck out nine. The only run the Dodgers scored against him came in the fifth inning, which Andre Ethier led off with a double. Ethier scored on a bloop single to center field by Juan Uribe to put the Dodgers ahead, 1-0. The one-run lead was held until the seventh inning, when Tyler Colvin hit a home run against Aaron Harang to tie the score, 1-1. Winless in his previous three starts, Harang was magnificent. The home run by Colvin was the only major mistake in an otherwise near-flawless performance. Harang threw only 97 pitches to complete a season-high eight innings and limited the Rockies to four hits.