Manchester United forward Wayne Rooney revealed a Bayer Leverkusen player asked him how Ryan Giggs has defied the years to continue playing.
Giggs celebrates his 40th birthday on Friday, and delivered a superb display in Wednesday's 5-0 Champions League romp at the BayArena.
Sami Hyypia's men simply had no answer to the Welshman's class.
Ryan Giggs' major trophies
1992 League Cup(01 of24)
Open Image Modal1993 Premiership title(02 of24)
Open Image Modal1994 Premiership title (that's a young Thomas Ince)(03 of24)
Open Image Modal1994 FA Cup(04 of24)
Open Image Modal1996 Premiership title(05 of24)
Open Image Modal1996 FA Cup(06 of24)
Open Image Modal1997 Premiership title(07 of24)
Open Image Modal1999 Premiership title(08 of24)
Open Image Modal1999 FA Cup(09 of24)
Open Image Modal1999 European Cup(10 of24)
Open Image Modal1999 Intercontinental Cup(11 of24)
Open Image Modal2000 Premiership title(12 of24)
Open Image Modal2001 Premiership title(13 of24)
Open Image Modal2003 Premier League title(14 of24)
Open Image Modal2004 FA Cup(15 of24)
Open Image Modal2006 League Cup(16 of24)
Open Image Modal2007 Premier League title(17 of24)
Open Image Modal2008 Premier League title(18 of24)
Open Image Modal2008 European Cup(19 of24)
Open Image Modal2008 Club World Cup(20 of24)
Open Image Modal2009 League Cup(21 of24)
Open Image Modal2009 Premier League title(22 of24)
Open Image Modal2011 Premier League title(23 of24)
Open Image Modal2013 Premier League title(24 of24)
Open Image Modal"I've run out of things to say about Ryan," Rooney said. "Actually, during the game, the Bayer centre-half was asking how he is still playing at that age.
"I certainly won't be playing at that age, that's for sure. His composure on the ball is great."
United's paucity of options in midfield, and Michael Carrick's injury, could lead to a start for Giggs at Tottenham on Sunday.
If Arsenal win at Cardiff, United will be 10 points adrift of the Premier League leaders at kick-off.