We have seen that there have been only 6 occasions when the 10th-wicket pair has doubled the score. The 9th-wicket pairs do slightly better with 9 such instances. 8 of these ended in losses and one was drawn.
This is the tabular list:
Ratio 1 is the ratio (9th wkt partnership) / (sum of 1st to 8th wkt partnerships)
Ratio 2 is the ratio (sum of 9th and 10th wkt partnerships) / (sum of 1st to 8th wkt partnerships)
The first such instances occurred in 1948, then 1967 and 1981 and more regularly since then.
We are more concerned about Ratio 1 here. The highest is 2.923 by Asif Iqbal and Intikhab Alam, and the lowest is 1.038 by Fleming and Doull.
The 10th wkt partnerships were rather small in these cases.
The best here is 2.923 (again Asif/Intikhab) and the lowest 1.058 (again Fleming/Doull).
Note the debutants Masvaure and more recently Muthusamy.
The last instance here is the record 195 by Boucher and Symcox, which is the only drawn match here.
The highest score by a No 10 here is 108 by Symcox, followed by fifties from several others starting with Madan Lal (63*).