There were questions about Taijuan Walker's arm strength and potential injuries during spring training and the World Baseball Classic. He put most of those to bed in April when he had a nice run of consecutive starts, but those concerns are back after he failed to make it through 1.0 inning last week in San Francisco. Walker was only able to record two outs while allowing four runs on four hits and two walks. The Cubs are hitting .257 against right-hand pitching this season (No. 8 in MLB) with a .334 on-base percentage (No. 4) and a 106 wRC+ (No. 9). The Cubs' bullpen threw 118 pitches on Saturday, so we don't want anything to do with the second half of this game and would prefer to stick with the first five innings where the Cubs should have the advantage with Justin Steele on the mound. The Phillies are hitting .237 against left-hand pitching this season (No. 23 in MLB) with a .281 on-base percentage (last) and a 85 wRC+ (No. 24).