All Important single wicket in test career

Sir Donald Bradman needed only four runs to achieve his test career average to 100 per innings but Eric Hollies bowled him and prevent him to score those important four runs.
This considers the most important and most memorable wicket in the history.
Recently I dug up list of those batsmen who scored more then 5000 runs and have taken one or two wicket in their career but how important that single wicket.
It was India-Pakistan test match at Faisalabad when Sunil Gavaskar took the only wicket of his entire test career but that was Zaheer Abbas’ wicket. The match began on 16 October 1978 and Pakistan was in very strong position. After scoring 176 in the first innings Zaheer was nearing another one in the second innings and captain Bishensingh Bedi handed over the bowl to Sunil Gavaskar and he got the rid of the great Pakistan batsman. Zaheer was caught by Chetan Chauhan on 96 and missed the ton by 4 runs.
That was the only chance for Zaheer Abbas to score hundred in both innings of a test as he has done it five times in first class cricket.
England’s David Gower also taken only one wicket in his 117-match career and the victim was Kapil Dev. England toured India in 1981-82 and Kapil Dev was on full swing with bat at Kanpur where he has scored one of the fastest hundred (116 off 98 balls) of his career.
Don Bradman has taken two wickets in his career and one of those two was Wally Hammond, while Mike Atherton has taken two wickets and his victim was Dilip Vengsarkar and Wasim Akram.