Christopher O'Connell vs Lorenzo Sonego Prediction: It won't be easy against a fit O'Connell

Sonego is all-in after beating Berrettini easily. Now it's time to play with the Australian and progress in the tournament, but it will take work against the in-form O'Connell.

Less famous than his fellow Australian Nick Kyrgios, Christopher is trying to make an imprint here in Stuttgart following his win against the local idol Altmaier. He's coming on decent form following his loss against Kudla in Surbiton last week, and he should make Sonego attacking game a serious threat with his splendid footwork from baseline and his strong service on this surface. He's an overall good player, losing only after a battle in Geneva with Dimitrov on clay last month. He has his chances here, and we expect a very tight match.

Another convincing victory in the tournament's first match for the Turin-born player. He beat Matteo Berrettini, the finalist of last year, and he did it in two quick sets. Right to say Berrettini was just back from a long injury, but the game plan, the attacking game, and improvements are under the eye of all passionate fans. He can continue his magic moment of form after playing an excellent Roland Garros, losing only to Khachanov.

Both players are in good form, one beating a top 5 on the grass while the Australian is regulating the local idol Altmaier, who beat Sinner in the recent Roland Garros. We expect it to finish in 3 sets with over 22,5 games.