In this match between Casper Ruud and Francisco Cerundulo, I believe that Cerundulo has a chance to win. The reason is that Ruud has recently shown a weaker serve and his first serves often need a second attempt. This could be a problem for him against Cerundulo, who could take advantage of this inconsistency. Additionally, Ruud has shown inconsistent play indoors, where opponents have the upper hand against him. On the other hand, Cerundulo's game is promising. He always fights until the end and shows good results. Considering these factors, I think Cerundulo can win against Ruud today.
