Norway's Casper Ruud reacts as he plays against Belgium's Alexander Blockx during their 2026 ATP Tour Madrid Open tennis tournament quarter-final singles match at the Caja Magica in Madrid, on April 30, 2026. (Photo by Thomas COEX / AFP via Getty Images)

Norway's Casper Ruud serves the ball against Belgium's Alexander Blockx during their 2026 ATP Tour Madrid Open tennis tournament quarter-final singles match at the Caja Magica in Madrid, on April 30, 2026. (Photo by Thomas COEX / AFP via Getty Images)

Norway's Casper Ruud returns the ball to Belgium's Alexander Blockx during their 2026 ATP Tour Madrid Open tennis tournament quarter-final singles match at the Caja Magica in Madrid, on April 30, 2026. (Photo by Thomas COEX / AFP via Getty Images)

Norway's Casper Ruud returns the ball to Belgium's Alexander Blockx during their 2026 ATP Tour Madrid Open tennis tournament quarter-final singles match at the Caja Magica in Madrid, on April 30, 2026. (Photo by Thomas COEX / AFP via Getty Images)

The umpire checks the height of the net before the 2026 ATP Tour Madrid Open tennis tournament quarter-final singles match between Norway's Casper Ruud and Belgium's Alexander Blockx at the Caja Magica in Madrid, on April 30, 2026. (Photo by Thomas COEX / AFP via Getty Images)

Belgium's Alexander Blockx returns the ball to Norway's Casper Ruud during their 2026 ATP Tour Madrid Open tennis tournament quarter-final singles match at the Caja Magica in Madrid, on April 30, 2026. (Photo by Thomas COEX / AFP via Getty Images)

Belgium's Alexander Blockx returns the ball to Norway's Casper Ruud during their 2026 ATP Tour Madrid Open tennis tournament quarter-final singles match at the Caja Magica in Madrid, on April 30, 2026. (Photo by Thomas COEX / AFP via Getty Images)

Belgium's Alexander Blockx returns the ball to Norway's Casper Ruud during their 2026 ATP Tour Madrid Open tennis tournament quarter-final singles match at the Caja Magica in Madrid, on April 30, 2026. (Photo by Thomas COEX / AFP via Getty Images)