According to the arguments presented, my prediction for the match between Hubert Hurkacz and Alexei Popyrin at the Cincinnati tournament is in favor of Hurkacz. Hubert has shown amazing form, defeating Tsitsipas in the previous round, which was a surprise to me. Furthermore, Hurkacz has already convincingly defeated Popyrin twice before, without a tie-break and in straight sets. All of this indicates that Hurkacz has the advantage in this encounter. However, it is important to remember that Popyrin is also a young, talented player, and anything can happen. But at the moment, Hurkacz appears to be the more confident and stronger opponent, so my prediction leans towards a victory for Hurkacz, possibly in straight sets.
The match between Hubert Hurkacz and Alexei Popyrin deserves special attention. Polish player Hurkacz has shown excellent gameplay in this tournament, securing important victories against several strong opponents. In particular, he handled Stefanos Tsitsipas confidently, which is a significant achievement. Hurkacz is in great form and demonstrates strong play. On the other hand, Popyrin was not able to make it to the quarterfinals with full confidence, playing three-set matches and exhibiting patchy tennis. Such games can sap his energy and leave a mark on his physical form. Facing Hurkacz, who shows stability and good form, Popyrin might find himself in a disadvantageous position. Based on these factors, I am inclined to predict a victory for Hubert Hurkacz in straight sets against Alexei Popyrin. The Polish player has displayed stronger gameplay in the tournament and has the advantage both mentally and physically at the moment. Having secured victories against strong opponents, Hurkacz will strive to continue his successful streak and advance further in the tournament bracket.
