Believe it or not! The last time Beijing’s China Open was held…

This week’s China Open is among the tour-level stops back on the tennis calendar after the COVID-19 pandemic resulted in the cancellation of the combined WTA and ATP tournament for three successive years.

When the event was last held, Naomi Osaka and Dominic Thiem emerged victorious at the National Tennis Center in Beijing—among other things you might not remember:

These familiar faces are making their debuts at this year's event. When the tournament was last staged in 2019:

• Iga Swiatek hadn’t won a tour-level title
• Carlos Alcaraz was 16 and had never played a tour-level main draw
• A 15-year-old Coco Gauff was ranked outside the Top 100
• A 16-year-old Holger Rune was ranked outside the Top 1100
• Rune and Lorenzo Musetti were reigning junior Slam champs
• Mirra Andreeva was 12 and yet to play an ITF junior event
• An 18-year-old Jannik Sinner was coming off his major debut at the US Open
• Daniil Medvedev had reached five straight hard-court finals

More passing shots from this moment in time four years ago:

• Novak Djokovic stood at 16 majors in the amazing race
• Karolina Pliskova was the WTA No. 2. behind Ash Barty
• Felix Auger-Aliassime was the only teenager ranked inside the ATP’s Top 100
• Ons Jabeur was yet to crack the Top 50
• Casper Ruud hadn’t yet surpassed dad Christian as the highest-ranked Norwegian in history
• Elena Rybakina was without a Grand Slam match win
• Andrey Rublev hadn’t won any ATP 500 titles
• Three of Aryna Sabalenka's four WTA trophies had come in China following her Wuhan title defense
• Ben Shelton had never played a pro tournament at any level
• Wang Qiang was the Chinese No. 1 at No. 20
• Fabio Fognini and Matteo Berrettini were separated by 100 points at No. 12 and No. 13
• Jessica Pegula was the No. 12-ranked American woman
• The Big 3 occupied the ATP’s Top 3 (1. Djokovic; 2. Rafael Nadal; 3. Roger Federer)