Drivers watched in amusement as the monitor lizard reacted to the chase with a sudden burst of speed after sauntering onto the circuit shortly after the start of the daylight session.
O'Riley featured more than 100 times for the Hoops after arriving from Milton Keynes Dons in 2022, scoring 27 goals and helping Celtic win the Scottish Premiership three times.
Armand Duplantis won at the Diamond League finals for his his 15th straight win this season.
Check out the live streaming details for the Wolverhampton vs Chelsea Premier League 2024–25 match, which is set to take place at Molineux Stadium on Sunday.
Spaniard Badosa posted a 6-1, 7-6 (7/4) triumph over home hero Shuai in the quarterfinal of the even in Beijing on Thursday.