Roger Federer is preparing himself for a barrage of Kevin Anderson big serves after the Swiss superstar sealed his place in the ATP and WTA Miami Open quarter-finals in just 61 minutes on Wednesday.
Federer is celebrating 20 years at this tournament and edged closer to his fourth title in South Florida as the up and coming Russian Daniil Medvedev was swatted aside 6-4 6-2.
Next up for the 20-time Grand Slam-winning legend is the South African world number seven who famously beat the 37-year-old at Wimbledon in 2018 over five dramatic sets.
That triumph was Anderson's only win over Federer in six attempts — and the only time he's won a set.
But having classily dealt with Medvedev, the former world number one knows it won't be as straightforward with the 6 ft 8 in Anderson at the other end of the Hard Rock Stadium's center court.
"I think if you beat me at Wimbledon, you've got my attention," smiled Federer.
"He's got a great serve and I'm happy he's playing again after his injury.
"So from that standpoint, I know what I'm about to expect tomorrow. The matches I have played against him I know can be extremely close always."
Defending champion John Isner, meanwhile, powered his way to the semi-finals as Roberto Bautista Agut, who sent world number one Novak Djokovic crashing out in the previous round, was seen off 7-6 (7-1), 7-6 ,(7-5).
"I was pretty fortunate out there," confessed the American, who smashed down 24 aces compared to the Spaniard's tally of just three and will play the winner of Croatia's Borna Coric and Felix Auger-Aliassime, the 18-year-old from Canada.
In the women's draw, Simona Halep moved closer to reclaiming her world number one crown after a well-executed 6-4 7-5 triumph over China's Wang Qiang.
Following Petra Kvitova's exit on Tuesday, Halep needs only to reach Saturday's final to knock Naomi Osaka off the top of women's tennis after being deposed following the Japanese's second major win at the Australian Open earlier this year.
Halep's recovery from 1-5 down in the second set showed the kind of mental toughness displayed by only the very best and the Romanian is looking in good shape to land her first Miami title, even if she's not overly consumed about the prospect of reclaiming the number one tag.