Nick Kyrgios’ underarm fail on set point!

Nick Kyrgios tries and fails an underarm serve on set point to them get broken

Nick Kyrgios tried this underarm serve against Jordan Thompson when he was leading 6-5 40-15 before being broken and win the set at 10 after a dramatic tiebreak. Later Kyrgios won the match at the 5th set. Therefore that underarm serve could have cost him the match.