Teheran (0-1) took the loss after surrendering three runs on four hits and two walks while fanning seven over five innings Thursday against Philadelphia.
Teheran turned in a serviceable outing on Opening Day, although he didn't have his best stuff. He allowed a solo homer in the first inning and two more runs crossed the plate in the fourth. The 28-year-old was solid for Atlanta in 2018, finishing with a 3.94 ERA and 162 punchouts over 175.2 innings. He'll have a chance to earn his first victory of the year Thursday against the Cubs.