Kei Nishikori has reached a second-straight Australian Open quarter-final with a crushing win over Jo-Wilfried Tsonga on Sunday.
The Japanese seventh seed was a surprisingly comfortable winner, easing to a 6-4 6-2 6-4 victory in the fourth-round clash on Hisense Arena.
Nishikori, the 2014 US Open runner-up, has reached the last eight at a grand slam for the fifth time, including a third at Melbourne Park.
Tsonga, who had won just two of six previous meetings between the pair, required treatment on a suspected back injury during the second set.
But Nishikori was far too good in the baseline exchanges and the 26-year-old won 49 of 81 points from the back of the court.
A double fault gifted Nishikori his first break of serve and an unforced error off the forehand side saw him take a 4-1 lead.
While French 2008 runner-up Tsonga pulled back one of those breaks, that was all he could manage as Nishikori took the first set.
Nishikori managed an early break in the second on his way to another 4-1 advantage as he took control of the contest.
The strong starts to sets continued for Nishikori in the third as he broke in the opening game before closing out a convincing win.
Nishikori  bt Tsonga  6-4 6-2 6-4
Nishikori - 3
Tsonga - 13
Nishikori - 31/25
Tsonga - 28/36
BREAK POINTS WON
Nishikori - 5/12
Tsonga - 1/2
FIRST SERVE PERCENTAGE
Nishikori - 60
Tsonga - 60
PERCENTAGE OF POINTS WON ON FIRST/SECOND SERVE
Nishikori - 74/64
Tsonga - 63/47
Nishikori - 97
Tsonga - 76