Cobolli-Berrettini: who goes through?

Flavio Cobolli and Matteo Berrettini meet for the first time in an official match, in the round of 16 of the Vienna ATP 500. On paper it is the world No. 6 against a player outside the top forty. Tennis Abstract's hard-court Elo rating has them much closer: Cobolli 33rd, Berrettini 44th. Narrowing the gap further is Cobolli's thigh, treated by the physio in the first round against Grigor Dimitrov.

What the Dimitrov match showed

Cobolli beat Dimitrov on the fifth match point, with nine aces.

What remains to be seen is his movement. Indoors, Cobolli builds his game on the deep return, defending well behind the baseline and getting one more ball back in the neutral rally. All three depend on the legs.

Berrettini's plan: short points and low balls

Berrettini beat Tomás Martín Etcheverry 6-3, 6-4 with 12 aces and 83% of first-serve points won. He saved all six break points he faced.

On an indoor hard court this is his most effective tennis: a heavy first serve, a forehand within the third shot (the serve+1), quick service games. With those numbers Cobolli will see few playable returns on the first serve. His chances come on the second, where he has to return deep through the middle to take away Berrettini's inside-out forehand angle.

The shot that can change the match is Berrettini's backhand slice. Against a healthy opponent it buys time. Against a Cobolli with a thigh problem it becomes a way to make him bend for the low ball and push forward again, which is exactly the movement the pain slows down. If Berrettini mixes it with the forehand, every rally beyond five shots costs Cobolli more energy than it costs him.

The Race and the risk calculation

Cobolli came into Vienna sixth in the Race with 3,640 points, 20 behind Daniil Medvedev and 760 ahead of tenth-placed Alex de Minaur. Jannik Sinner, second, will not play the Finals because of injury, which frees up one more spot.

After Vienna comes the Paris Masters 1000. For Cobolli the real risk is losing the derby in three sets and arriving in Paris with a more fatigued thigh.

Berrettini starts with a slight edge, because his plan (serve, first shot, low slice) hits exactly where Cobolli is limited. How much the problem he showed against Dimitrov matters will be clear soon: the prediction falls apart if, in the opening games, Cobolli gets to the slice on his feet, attacks it with the forehand and returns deep on the second serves. In that case it becomes the match between the world No. 6 and a player outside the top forty once again.