The Washington Nationals will host the Tampa Rays in the final game of this home and home series tonight, looking to salvage a split after losing two of the first three. It's not going to be an easy task, as they'll be facing the Rays ace, who is undefeated on the road this season.

Here are my keys to the game:

1. Pitching - Chris Archer will be on the hill for the visitors, and he's 4-0 over his last seven starts. Archer (7-4, 2.00 ERA) gave up three runs on five hits over seven frames in a 5-4 win over the White Sox in his last start. He's only allowed two runs on 12 hits over 15 innings while winning his last two starts on the road, and he's 5-0 with a 0.51 ERA on the road this season. The Nats counter with Doug Fister, who is returning from an injury.

2. Injuries - Both Jayson Werth and Ryan Zimmerman are on the DL, and those are two big bats missing for Washington. They had a combined 46 RBIs before being sidelined by injuries.

3. X-Factor - The Rays have won six of their last seven on the road, while the Nats have lost six of their last seven at home.

Selection: This is a play on the Tampa Rays (10*)