

Please note:
Gauff had 3 double faults today.
Gauff also won 15 of her 20 2nd second serves today (75% win rate on 2nd serves, that is pretty high rate for 2nd serves).
Of the five second serves points she loss today, 3 were double faults (points that she gave away for free). So that means she only loss two of her second serves points that were in play.
Paolini was not able to exploit any weakness in Gauff’s second serve, today (or maybe today there was no weakness).
On the other hand, Paolini only won points on 4 of her 19 second serves. Paolini did not have any double faults (no free points give away). Gauff exploited the hell out of Paolini’s 2nd serve.