Former West Indies cricketer Ian Bishop and renowned Indian commentator Harsha Bhogle were stunned by Pakistan's bowling in the second innings against Australia in Melbourne on Thursday.
Pakistan had reduced Australia to 16-4 with Mir Hamza and Shaheen Afridi claiming two wickets each.
The duo took to X, formerly Twitter, to share their opinion on the match.
Meanwhile, Bhogle was impressed by Pakistan's genuine swing bowling.
The visitors were dismissed for 264 in their first innings in reply to Australia's 318.
Cummins ended with 5-48, while Nathan Lyon grabbed 4-73 after Pakistan's tail wagged in Melbourne to narrow the hosts' first-innings lead to 54.
Pakistan had looked comfortable in reaching 124-1 as they chased Australia's first-innings 318.
But an electric spell from Cummins in the final session on Wednesday saw them collapse to 194-6, and he was at the heart of the action again on Thursday.
After light drizzle delayed the start by 45 minutes, they resumed 124 runs adrift with Rizwan on 29 and Aamer Jamal not out two.
Wicketkeeper Rizwan, picked ahead of Sarfaraz Ahmed for his batting prowess, made a confident start.
But he was no match for a canny Cummins, who tempted him into a drive that flew straight to David Warner who had just been moved to cover from slip.
Rizwan was gone for 42 to end a 45-run partnership with Jamal, who started to play shots with new partner Afridi as they chipped away at the lead.
An enterprising Afridi crunched four boundaries before he was undone by Lyon's spin, trapped lbw for 21.
Jamal looked in good touch, finding the ropes three times in six balls at one point in his 33 not out.
Cummins grabbed his fifth wicket to dismiss Hasan Ali for two with a delivery that took out his off stump.
Lyon then had Mir Hamza stumped for two to collect his 505th Test wicket.
