Jim Macey's Jam Boys drew 1-1 away at high-flying Folland Sports in the Premier Division, while Tadley claimed a good 2-0 win at Andover New Street in Division One.
Whitchurch's game was an action-packed affair, with Nic Turpin being denied by the home goalkeeper in the early stages.
The hosts were reduced to 10 men when their goalkeeper was shown a straight red card for a dangerous challenge on Isaac Sedu, but the substitute 'keeper managed to save the resulting penalty, taken by Curtis Angell.
Turpin then had another good chance, shooting straight at the goalkeeper when left unmarked from a corner as the game remained goal-less at half-time.
Turpin was denied again early in the second half, his effort being cleared off the line, and the home side hit them on the counter to take the lead.
Whitchurch then lost defender Adam Pearson to a harsh second yellow card, but they pulled level on 65 minutes, Sedu breaking down the right before firing an excellent angled shot into the bottom corner of the net.
Turpin missed a fantastic chance to win the game for the visitors late on, firing over following good work from Sedu, but manager Macey was happy with a point.
"We really should have won but I was really pleased with the response I got from the lads after we lost our previous league game," he said. "They had to step up and they did just that."
Next up for Whitchurch is a tricky trip to Newport (IOW) on Saturday.
Tadley Calleva remain seventh in the Division One table after winning at Andover New Street.
The game was goal-less at half-time but Tadley took the lead on the hour, Mario Nurse scoring from the penalty spot.
The visitors made the game safe with five minutes to go, youngster Adam Aliston playing Tol Sotonye through to round the goalkeeper and slot home.
Manager Danny Dolan said: "I am really pleased with the win. It is not an easy place to go to and the conditions were not great, but we were able to tough it out."
Next up for Tadley is a difficult trip to Petersfield Town, a side Dolan rates as the best in the division, on Saturday.