Federer closes in on top spot
Roger Federer is on the brink of becoming the oldest man to be world number one after reaching the quarter-finals of the Rotterdam Open.
The 36-year-old has enjoyed a renaissance since winning the Australian Open in 2017 as he also added another Wimbledon title to his collection last summer.
However, the Swiss' return to form was not enough for him to usurp long-term rival Rafael Nadal at the top of the rankings at the end of last year.
I've struggled to try and get there. I had to win a lot of matches.Roger Federer
But with Nadal currently struggling because of a hip problem and Federer defending his Australian crown in Melbourne last month to make it 20 Grand Slam titles, he is now closing in on a return to the number one spot for the first time since October 2012.
Federer was made to work hard for his latest victory as he overcame Germany's Philipp Kohlschreiber 7-6 (10-8) 7-5 in Rotterdam.
"Tonight was complicated, I had to fight and struggle," he said. "I had a good gameplan going in, but I was never able to completely pull it off."
Looking ahead to his next clash against Robin Haase in the last-eight as he looks to become number one, he added: "I've struggled to try and get there. I had to win a lot of matches."
Federer, who is 1/3 to win the Rotterdam Open, is priced at 2/9 to defeat Haase in straight sets, while the Dutchman is available at 9/1 to win the quarter-final showdown.
View all Tennis betting