Roger Federer's 5 most significant rivalries in the last decade

#T4 Tomas Berdych: 17 matches

Federer and Berdych at the 2017 Laver Cup in Prague

Like against Del Potro, Federer also played 17 matches with Tomas Berdych during the 2010s decade, winning 12 of those matches. Federer was 8-1 against the Czech in the 2000s decade.

Berdych won three of his first four matches with Federer during the 2010s before going 2/13, which included a run of nine straight losses. The recently retired 2010 Wimbledon finalist became one of just eight players to beat Federer multiple times at a Grand Slam when he got the better of the Swiss maestro in the quarterfinals at 2010 Wimbledon and 2012 US Open.

Federer's other losses to Berdych during the decade came in the Miami 2010 fourth round, Cincinnati 2011 quarterfinals and the Dubai 2013 semifinals, while winning 2012 Madrid and 2014 Dubai at the expense of the Czech player. In the pair's last meeting, Federer won in straight sets in the 2018 Australian Open quarterfinals.

#3 Rafael Nadal: 18 matches

Federer greets Nadal at the net after beating the Spaniard to reach the 2019 Wimbledon final

One of only six players with a winning head-to-head record against Federer during the decade that was 2010 to 2019, Rafael Nadal's 11 wins against the Swiss maestro is the second-highest tally of defeats Federer endured against any player during this decade.

Federer significantly improved his head-to-head deficit with Nadal during this decade after going 7-13 in the previous decade. The 37-year-old recorded his first-ever run of five consecutive wins against Nadal (Nadal has two such runs against Federer).

The Swiss enjoyed his first victory over Nadal in a Grand Slam match in 11 years after overcoming a break deficit in the fifth set of the 2017 Australian Open final.

The 20-time Grand Slam winner went 5-2 in tournament finals against Nadal during this period, losing in the finals at 2011 Roland Garros and 2013 Rome while winning titles at ATP Finals (2010), Basel (2015), Australian Open (2017), Miami (2017) and Shanghai (2017) at the southpaw's expense.

In the pair's last meeting, Federer beat Nadal in a four-set semifinal at 2019 Wimbledon.