No. 2 seed Stefanos Tsitsipas came from behind to fight off Frenchman Gregoire Barrere 6–7 (6), 6–4, 7–6 (3) in opening-round play Monday at the Terra Wortmann Open in Halle, Germany. Already up a set, Gregoire jumped to a 3–1 lead in the second but Tsitsipas won five of the next six games to take…