The two were paired together in the second last group, ahead of Cameron Young and Cameron Smith, and went toe to toe across a fascinating 18 holes.
By the time McIlroy and Hovland left the 18th together, they had hit the top and go into Sunday’s final day with a four shot lead over Young and Smith.
5. ST ANDREWS, SCOTLAND - JULY 16: Sahith Theegala of the United States and Si Woo Kim of South Korea shake hands on the 18th green during Day Three of The 150th Open at St Andrews Old Course on July 16, 2022 in St Andrews, Scotland. (Photo by Ross Kinnaird/Getty Images)
Sahith Theegala of the United States and Si Woo Kim of South Korea shake hands on the 18th green during Day Three of The 150th Open at St Andrews Old Course on July 16, 2022 in St Andrews, Scotland. (Photo by Ross Kinnaird/Getty Images) Photo: Ross Kinnaird
6. ST ANDREWS, SCOTLAND - JULY 16: Jon Rahm of Spain putts on the 17th green during Day Three of The 150th Open at St Andrews Old Course on July 16, 2022 in St Andrews, Scotland. (Photo by Ross Kinnaird/Getty Images)
Jon Rahm of Spain putts on the 17th green during Day Three of The 150th Open at St Andrews Old Course on July 16, 2022 in St Andrews, Scotland. (Photo by Ross Kinnaird/Getty Images) Photo: Ross Kinnaird
7. ST ANDREWS, SCOTLAND - JULY 16: Adam Scott of Australia tees off on the 18th hole during Day Three of The 150th Open at St Andrews Old Course on July 16, 2022 in St Andrews, Scotland. (Photo by Harry How/Getty Images)
Adam Scott of Australia tees off on the 18th hole during Day Three of The 150th Open at St Andrews Old Course on July 16, 2022 in St Andrews, Scotland. (Photo by Harry How/Getty Images) Photo: Harry How
8. ST ANDREWS, SCOTLAND - JULY 16: Si Woo Kim of South Korea tees off on the 18th hole during Day Three of The 150th Open at St Andrews Old Course on July 16, 2022 in St Andrews, Scotland. (Photo by Harry How/Getty Images)
Si Woo Kim of South Korea tees off on the 18th hole during Day Three of The 150th Open at St Andrews Old Course on July 16, 2022 in St Andrews, Scotland. (Photo by Harry How/Getty Images) Photo: Harry How