Two teams staggering but upright in the National League playoff race hope to deliver the knockout punch to the other when the Arizona Diamondbacks visit the San Francisco Giants for a two-game series beginning Monday night. Both teams enter the series -- the final two meetings of the season between the NL West rivals -- coming off much-needed wins Sunday, with the Diamondbacks avoiding a three-game sweep at Milwaukee with a 5-2 win and the Giants rallying for a 5-4 victory and a two-game sweep of their series in Oakland. The Giants (65-65) begin the week four games out of the second NL wild-card spot, a half-game ahead of the Diamondbacks (65-66).