6 Stefanos Tsitsipas clawed his way back from two sets down to beat little-known Jaume Munar 4-6, 2-6, 6-1, 6-4, 6-4 and survive a French Open first round scare on Tuesday. Tsitsipas, a losing finalist in Hamburg on Sunday, looked to be cruising through the first set after breaking the Spanish clay court specialist at the start to go 3-1 …