Valentin Vacherot opened his Shanghai title defence with a completed 6-4, 7-6(5) victory over Sebastian Baez in the second round of the Rolex Shanghai Masters on Saturday, 10 October 2026. He hit 15 aces in the straight-sets win, but Baez’s second-set recovery forced the defending champion to finish in a tiebreak.
The 27-year-old Monegasque, seeded 17th, won in 86 minutes and seven seconds. After receiving a first-round bye, this was his opening played match of the tournament, with the round-of-64 victory securing his place among the last 32 at the hard-court ATP Masters 1000 event.
Vacherot had an opportunity to complete the match while serving at 5-3 in the second set. Baez fought back to extend the contest, leaving the champion to settle it by taking the second-set tiebreak 7-5. The finish gave Vacherot a successful return to the centre court where he had enjoyed his breakthrough a year earlier, although the route to victory became more demanding after a controlled opening set.
First-serve strength, second-serve decline
The central contrast was between Vacherot’s first-serve strength and his lower second-serve points won. He struck 15 aces, including 11 in the second set, and won 35 of 42 points behind his first delivery across the match. Those figures show his first-serve effectiveness; the set-by-set split supplies context for the closely contested second set.
Vacherot landed 14 of 25 first serves in the opening set, then 28 of 39 in the second, lifting his first-serve percentage from 56 to 72. His success behind that delivery also improved, from 11 of 14 points won to 24 of 28. He was finding his first serve more frequently and winning a larger share of the points when it landed.
The second-serve comparison moved sharply in the other direction. Vacherot won nine of 11 such points in the first set, but five of 11 in the second. With the same number of second-serve points played in each set, that amounted to four additional points lost in the later set.
The service-game outcomes also differed between the sets. Vacherot held all five of his opening-set service games without facing a break point. In the second set, he faced three break points, saved two and lost serve once. His two breaks of Baez’s serve were divided evenly between the sets, so Baez’s lone break erased the second-set advantage that Vacherot had established on return.
The total-point figures show another side of the narrow second set. Vacherot won 30 points to Baez’s 24 in the opener and 42 to 36 in the second, giving him a six-point advantage in each. He finished with 72 of the match’s 132 points. The identical point margins produced different game scores, with the second set requiring the extra contest after the players had each broken once.
Baez put 52 of 68 first serves into play across the match, about 76 per cent, compared with Vacherot’s 66 per cent. Baez won 34 of those 52 first-serve points. The comparison adds a distinction between the frequency of a first serve landing and the share of subsequent points won.
Paul next in the third round
Tommy Paul, the 15th seed, is Vacherot’s confirmed third-round opponent. Paul reached that stage by beating A. Vallejo 6-2, 6-2 in his own opening match after a bye. Both players therefore enter their last-32 meeting with one played victory in Shanghai, and their encounter will be their first ATP tour-level head-to-head meeting.
Vacherot’s defence carries an exceptional historical backdrop. In the 2025 final he recovered from losing the opening set to beat his cousin Arthur Rinderknech 4-6, 6-3, 6-3. He won that title as world No. 204, becoming the lowest-ranked champion in ATP Masters 1000 history. That final required a full deciding set, whereas his return to Shanghai began with a straight-sets victory. His opening assignment as a seeded defending champion is therefore a different setting from the championship match that produced his breakthrough.
