What happened: The schedule features a Tuesday doubleheader to accommodate the extra contest. The division rivals will face off five times over a four-day span.

Why it matters: This heavy concentration of games offers a significant opportunity to shift the division standings ahead of the All-Star break. Roster depth will be tested as both clubs manage their pitching staffs through the condensed window.

What to watch: Monday's opening pitch is slated for 6:45 p.m. local time at Busch Stadium.