The NL East-leading Washington Nationals haven't been this far above .500 since 2005.
The Colorado Rockies are at their lowest point since that same season.
Coming off an abbreviated outing, Nationals All-Star right-hander Stephen Strasburg will try to avoid losing three straight starts for the first time in Friday night's series opener against the visiting Rockies.
Down by four runs in the seventh inning, the Nationals (48-32) rallied to beat San Francisco 6-5 on Thursday and extend their winning streak to four.
Bryce Harper, who finished third in fan voting for the final NL All-Star spot, tied the game in the ninth with a single, then scored the final run on Adam LaRoche's grounder when the Giants botched a potential inning-ending double play.
"Not the way we drew it up, but we will take it,'' LaRoche said.
Washington is 16 games above the break-even point for the first time since it was 52-36 on July 13, 2005. The Nationals finished that season 81-81 - still their only non-...