Pretty light night of baseball but there are a couple of interesting games to keep an eye on
Marlins @ Nationals - 6:05pm. Marlins are technically still alive, the Cubs can increase their lead over them to 5.5 games with a Nats win. Nats continue to play solid baseball.
Giants @ Padres - 8:40pm. Giants are currently in WC3, 2 games behind the Cubs, and 0.5 games ahead of Arizona. A Padres win would give the Cubs a 2.5 game cushion over WC3 (Giants/DBacks tie)
Braves @ Dodgers - 9:10pm. No real affect on the Cubs but its possibly the 2 best teams in baseball squaring off. The Dodgers have been insanely hot (24-4 in last 28) and trail the Braves by 4 games for the 1st overall seed, so they would probably need to sweep to put the top seed in play for them. Braves are "only" 15-4 in their last 19 so not quite as hot as LA