Andrey Rublev returns a ball to Tommy Paul of USA (not pictured) during the Erste Bank Open 2026 ATP 500 tournament in Vienna, Austria on October 27, 2026. (Photo by Joe KLAMAR / AFP via Getty Images)

Tommy Paul of USA returns the ball to Andrey Rublev (not pictured) during the Erste Bank Open 2026 ATP 500 tournament in Vienna, Austria on October 27, 2026. (Photo by Joe KLAMAR / AFP via Getty Images)

Tommy Paul of USA returns the ball to Andrey Rublev (not pictured) during the Erste Bank Open 2026 ATP 500 tournament in Vienna, Austria on October 27, 2026. (Photo by Joe KLAMAR / AFP via Getty Images)

Tommy Paul of USA returns the ball to Andrey Rublev (not pictured) during the Erste Bank Open 2026 ATP 500 tournament in Vienna, Austria on October 27, 2026. (Photo by Joe KLAMAR / AFP via Getty Images)

Tommy Paul of USA returns the ball to Andrey Rublev (not pictured) during the Erste Bank Open 2026 ATP 500 tournament in Vienna, Austria on October 27, 2026. (Photo by Joe KLAMAR / AFP via Getty Images)

Tommy Paul of USA celebrates as he wins against Andrey Rublev (not pictured) during the Erste Bank Open 2026 ATP 500 tournament in Vienna, Austria on October 27, 2026. (Photo by Joe KLAMAR / AFP via Getty Images)

Tommy Paul of USA celebrates as he wins against Andrey Rublev (not pictured) during the Erste Bank Open 2026 ATP 500 tournament in Vienna, Austria on October 27, 2026. (Photo by Joe KLAMAR / AFP via Getty Images)

Russia's Andrey Rublev (R) congratulates winner Tommy Paul of the US after the Erste Bank Open 2026 ATP 500 tennis tournament in Vienna, Austria, on October 27, 2026. (Photo by Joe Klamar / AFP via Getty Images)