Roger Federer saw off the challenge of resurgent fellow Swiss Stan Wawrinka to reach the semi-finals of the Cincinnati Masters on Friday.
Federer has won all seven of the finals he has appeared in at the ATP Masters 1000 event in Ohio, and is on course to triumph for the first time as a 37-year-old, having come from behind to beat Wawrinka 6-7 (2-7) 7-6 (8-6) 6-2 after two hours and 19 minutes.
It was stern test of Wawrinka's progress in recovering from long-term knee trouble, and he passed with flying colours, until fatigue crept up on the three-time grand slam winner.
Federer, meanwhile, advances to a semi-final against David Goffin, with Novak Djokovic or Marin Cilic awaiting in the final.
Both players could have been forgiven for being somewhat below their best late on Friday at the Lindner Family Tennis Center, having been required to finish their third-round matches earlier in the day due to bad weather interrupting Thursday's schedule.
Wawrinka had beaten Marton Fucsovics in straight sets, while Federer overcome Leonardo Mayer, also in two.
There was little indication they were feeling the residual effects of those exertions, though, as the first set remained on serve.
With both players near their consistent best, Wawrinka saved two break points in the sixth game, while Federer offered his compatriot none.
The older man looked poised to take the opener when he was presented with two break-point and set-point opportunities in the 12th game, but Wawrinka dug deep to save the first with a forehand down the line, before staving off the other by coming to the net and forcing Federer to send a forehand passing shot long.
Unexpectedly, the resulting tie-break rapidly got away from Federer, who netted a routine overhead and made another poor forehand error to allow Wawrinka to take it with ease.
The second set proved a similar affair, but this time it was Wawrinka's turn to blink in the tie-break, as he immediately gave up a mini break to fall behind. And when the 33-year-old's attempted backhand down the line sailed wide, the match was level at 1-1.
Wawrinka eventually ran out of energy in the third set, giving up his serve for the first time in the sixth game when he came to the net and could not get enough of his racquet on a Federer passing shot.
And from there, the senior partner in the iconic Swiss duo pulled clear in imperious fashion, consolidating and then breaking again to love to take it on the first of three match points, when Wawrinka sent a forehand long.
20 de febrero 2019
|Hamilton not worried by Ferrari pace|
|Cheetahs centre Lee hit with 13-week ban for blowing his nose on opponent|
|Kane returns to Tottenham training|
|Wenger would be ´great´ as Chelsea boss, says Seaman|
|Passing very fast is not his best characteristic – Sarri defends Kante´s role change|
|Stricker confident Ryder Cup qualification changes can help Team USA|
|Furyk obvious choice for vice-captain - Stricker|
|The key is in his hands – Emery tells Ozil to prove a point|
|Ryder Cup 2020: The last five contests on US soil|
|Icardi will be welcomed with open arms, insists Candreva|
|Rudiger admits ´no player on Earth´ would be happy with Chelsea run under Sarri|
|Stricker named USA Ryder Cup captain|
|Sarri plans to be Chelsea manager ´for a long time´|
|I wish he´d kick me – Morata relishing ´a good beating´ from Bonucci|
|Strauss cleared to face France despite lost passport|
|Barcelona slayer Boateng signs for Dalian Yifang|
|Highlanders centre Tomkinson´s red card overturned|
|Lucas Silva sets sights on second chance at Real Madrid|
|Saints stalwart Wood signs new deal|
|Pique criticises Real Madrid´s attitude towards refereeing|
|Khedira out for a month after heart treatment|
|Halep pulls off Tsurenko repeat to reach last eight|
|Manchester United are more than just ´world class´ Pogba, says Young|
|Barcelona need to recover confidence, admits Ter Stegen|
|Record-breaker Taylor hungry for more runs|
|Federer to make Madrid Open return|
|Cricket coach Ansari given 10-year ban|
|Chelsea will give everything to turn season around - Azpilicueta|
|Lomachenko to face Crolla in Los Angeles|
|Morata accepts fan hostility: Not even Jesus could please everyone!|
|I have everything in Madrid - James hints at return to Spain|
|The Ashes: Assessing England and Australia ahead of the 2019 series|
|Rebels captain Haylett-Petty re-signs until 2021|
|Ronaldo eyes end to European drought - Champions League in Opta numbers|
|City Football Group buys third-tier Chinese club Sichuan Jiuniu|
|New Zealand crush Bangladesh to seal series sweep|
|CONCACAF Champions League Review: Toronto trounced 4-0, Dynamo win|
|Thiem crashes out in Rio, Del Potro makes winning return|
|Liverpool can ´hurt´ Bayern in Munich, says Henderson|
|Manfred credits Athletics despite missing out on Murray|
|Man United must be wary of Liverpool too – Robertson|
|Machado joining Padres would be great - MLB commissioner|
|Martinez: We hope Icardi returns soon|
|Taylor becomes New Zealand´s all-time leading run-scorer in ODIs|
|PSG star Neymar cried for two days after foot injury|
|Klopp: Liverpool´s final pass not good enough|
|Valverde not worried about Suarez drought|
|Kovac not celebrating after holding Liverpool|
|QPR 2 West Brom 3: Livermore seals last-gasp win|
|Riley on LeBron leaving Heat: I saw a dynasty fly out the window|
19 de febrero 2019
|Klopp content with Liverpool´s ´good´ result against Bayern|
|Valverde accepts 0-0 a ´dangerous´ result to take back to Camp Nou|
|Vaughan outlines benefits of home Cricket World Cup for England|
|Three-time champion Tsonga out in Marseille|
|Leclerc impresses to make Ferrari fastest again|
|Van Dijk not missed as patched-up Liverpool stifle Lewandowski|
|Liverpool 0 Bayern Munich 0: Forwards fail to fire in Anfield stalemate|
|Lyon 0 Barcelona 0: Messi off colour as Valverde´s men are held|
|White Sox in ´disbelief´ after Machado reportedly picks Padres|
|Burrell to switch codes and join Warrington|
|Atletico boss Simeone not thinking about Ronaldo|
|Svitolina advances but Osaka is stunned in Dubai|
|Joshua and Miller trade insults at fiery MSG news conference|
|Machado agrees 10-year, $300m deal with Padres - reports|
|Allegri aware Ronaldo gives Juventus Champions League advantage|
|Guardiola labels Bernardo Silva Portugal´s biggest star|
|Khedira out of Juve squad to face Atletico due to irregular heartbeat|
|Manchester City quadruple ´nearly impossible´, says De Bruyne|
|Lovren out of Bayern clash but Firmino included|
|Flipkens withdraws as Larsson is beaten in Budapest|