With the Aussie Open in the rearview, we look at risers and sinkers in the ATP rankings.

Stefanos Tsitsipas has reached another career milestone on the heels of his breakout performance at the Australian Open. The Greek rises to a career-high ranking of No.12 in the world this week and now sits just 335 points out of the Top 10.

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The 20-year-old has just 154 points to defend over the next two months, between now and the end of the Miami Open.

Tsitsipas was one of three #NextGenATP players that hit a career-high ranking inside the Top 30 this week, along with No.28-ranked Alex de Minaur and No.30-ranked Frances Tiafoe.

At the top of the rankings World No.1 Novak Djokovic increased the gap between himself and No.2 Rafael Nadal to 2,625 points, while Roger Federer slipped out of the Top 5 for the first time since March of 2017, dropping from No.3 to No.6.

The biggest riser inside the Top 20 was France’s Lucas Pouille. The 24-year-old climbed 14 spots from No.31 to No.17. Pouille wasn’t the only Frenchman making a big jump. Aussie Open doubles champion Pierre-Hugues Herbert also reached a career-high singles ranking of 44 thanks to his third-round showing at Melbourne.

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American Taylor Fritz jumped a career-high ranking of 40 after reaching the third round in Australia and winning the Newport Beach challenger.

The biggest droppers inside the Top 100 were Hyeon Chung, who fell 25 spots to No.50, Tennys Sandgren, who fell 34 spots to No.75 and Tomas Berdych, who fell 22 spots to No.79. Kyle Edmund and Nick Kyrgios each dropped 15 spots, with Edmund falling to No.29 and Kyrgios falling to 67.