Jannik Sinner's 30-match winning streak ended with a French Open second-round loss to Juan Manuel Cerundolo Sinner led by two sets and 5-1 in the third before succumbing to dehydration and dizziness at Roland Garros Cerundolo, who won the match 3-6, 2-6, 7-5, 6-1, 6-1 after an 18-point streak, said he felt "sorry" for Sinner