Expect an underarm escalation, says Chang

PARIS - Michael Chang said on Monday he expects more players to use underarm serves, 30 years after "the only one of his career" in a famous victory over Ivan Lendl at Roland Garros.

The American, then 17, stunned Lendl in a dramatic fifth set in the fourth round before going on to win his only Grand Slam title.

Players this season have started to use the controversial tactic more regularly, including Australian star Nick Kyrgios and Kazakhstan's Alexander Bublik.