John Millman has clawed from two sets down only to fall to world No.5 Alexander Zverev in another brutal French Open first round exit.

The Australian battler pushed the German 22-year-old to breaking point on centre court in Paris before losing 7-6 (7-4) 6-3 2-6 6-7 (7-5) 6-3 in just over four hours on Tuesday.

Millman led 40-0 on serve at 3-4 before Zverev won five straight points to secure the decisive break in the fifth set, leaving the world No.56 winless from four main draw Roland Garros starts