Ben Shelton reportedly calls for second-serve time limit after US Open final loss

A post citing Cadena SER reports that Alexander Zverev beat Ben Shelton 6-3, 7-6(2), 5-7, 6-2 in the US Open final. The account says Shelton called for a specific time limit on second serves, noting that first serves have a 25-second clock but second serves have no fixed clock. It also says this was Shelton's first major singles final and that he reached a career-high world No. 4 afterward.