Raonic and Dimitrov were both knocked out of Wimbledon today, leaving none of the "young guns" who were supposed to take over from the Big Four left in the tournament. I'm starting to have doubts if these three will ever reach their potential. Maybe they already have.
Kei Nishiori:
Age: 25
Highest Ranking: 4
Tournament titles:
9 (5 500 and 4 250)
Masters 1000: None
Best Slam Results:
Australian: QF (2012, 2015)
French: QF (2015)
Wimbledon: 4th round (2014)
U.S. Open: Final (2015)
Milos Raonic:
Age: 24
Highest Ranking: 4
Tournament titles:
6 (1 500 and 5 250)
Masters 1000: None
Best Slam Results:
Australian: QF (2015)
French: QF (2015)
Wimbledon: SF (2014)
U.S. Open: 4th round (2012, 2013, 2014)
Grigor Dimitrov:
Age: 24
Highest Ranking: 8
Tournament titles:
4 (1 500 and 3 250)
Masters 1000: None
Best Slam Results:
Australian: QF (2014)
French: 3rd round (2013)
Wimbledon: SF (2014)
U.S. Open: 4th round (2014)
At the end of 2014, all three seemed to be rising but it's amazing what six months will do. Now they seem to be stalled while the young guys are starting to make their move. All three have their vulnerabilities: Nishikori (body), Raonic (techinique) and Dimitrov (mental). All three of them need to make a statement this summer or they could watch the younger guys zooming past them pretty soon.

Kei Nishiori:
Age: 25
Highest Ranking: 4
Tournament titles:
9 (5 500 and 4 250)
Masters 1000: None
Best Slam Results:
Australian: QF (2012, 2015)
French: QF (2015)
Wimbledon: 4th round (2014)
U.S. Open: Final (2015)
Milos Raonic:
Age: 24
Highest Ranking: 4
Tournament titles:
6 (1 500 and 5 250)
Masters 1000: None
Best Slam Results:
Australian: QF (2015)
French: QF (2015)
Wimbledon: SF (2014)
U.S. Open: 4th round (2012, 2013, 2014)
Grigor Dimitrov:
Age: 24
Highest Ranking: 8
Tournament titles:
4 (1 500 and 3 250)
Masters 1000: None
Best Slam Results:
Australian: QF (2014)
French: 3rd round (2013)
Wimbledon: SF (2014)
U.S. Open: 4th round (2014)
At the end of 2014, all three seemed to be rising but it's amazing what six months will do. Now they seem to be stalled while the young guys are starting to make their move. All three have their vulnerabilities: Nishikori (body), Raonic (techinique) and Dimitrov (mental). All three of them need to make a statement this summer or they could watch the younger guys zooming past them pretty soon.