Chicago at Arizona

Eduardo Rodriguez has quietly turned into the most reliable arm in Arizona's rotation, carrying a 2.61 ERA into this afternoon's rubber game after a stretch of starts that have kept the Diamondbacks in control against playoff-caliber lineups. Opposite him, Matthew Boyd is still 8-2, but the results have gotten shakier as August has worn on, and his stuff hasn't had the same bite it did back in July. I had the UNDER in Arizona's series finale against Cincinnati on Sunday, and it cashed comfortably, and this series has tracked a similar shape: Chicago blanked the Diamondbacks 7-0 in the opener, then scratched out just four runs of its own in a 5-4 loss the next night. Two competent lefties take the mound this afternoon in a set that has turned more on pitching than power through two games. Neither offense has hit well enough lately to make this number look light, and with Rodriguez controlling the zone the way he has, this profiles as another low-scoring afternoon. Take the UNDER this afternoon.