I think this should be the one.
England versus Pakistan - Oval - August 1967
Pakistan, trailing bt over 200 on first innings were down in the dumps at 53 for 7. In walked young Asif Iqbal to join Javed Burki.
A little later Burki fell for 7. 65 for 8.
In came Intikhab Alam at number ten. Asif and Intikhab put on 190 runs for the ninth wicket before both fell at the score of 255. Intikhab scored 51.
Asif Iqbal, the number 9, scored 146. It was 57.25% of the team total and a whopping 72,2 % of the 202 runs scored while he was at the crease.