Served rare: Is the underarm a strategy, drama or tennis maverick’s hallmark?

The serve is perhaps the most crucial weapon in men’s tennis. Every once in a while, though, players surprise their opponents with the underarm. That doesn’t guarantee a point, but the crowds love it.

from Moneycontrol Sports News https://www.moneycontrol.com/news/sports/served-rare-isunderarmstrategy-drama-or-tennis-maverick’s-hallmark_16611631.html