Another superb individual display from Michael Payne could not prevent Bucks suffering a narrow two-wicket defeat in their Unicorns Counties Championship Eastern Division game at Fenners.
After making Bucks history by scoring centuries in three successive Championship matches, Payne returned figures of 7-44 with his off-spin in the second innings of the low-scoring match, which finished a day early.
This was Bucks’s second successive match to finish in two days, but unlike the eight-wicket defeat by Lincolnshire, this was a tight, closely-fought affair.
Choosing to bat first, Bucks recovered from 49-4 to 174 all out thanks to a sixth-wicket stand of 59 between Shelvin Gumbs (62) and debutant wicket-keeper Brandon Allen (Lansdown).
Cambridgeshire looked like establish a healthy first-innings lead when they progressed to 102-1.
But a fine spell of left-arm spin bowling by Masoor Khan, who took 6-36, reduced them to 194 all out.
Trailing by just 20 runs on first innings, Bucks batsmen again struggled and were all out in their second innings for 165.
Gumbs again top-scored with 46, while AJ Woodland battled hard with his 35 coming off 135 balls, as Rob Sayer captured 8-66.
Left 146 for victory, the hosts looked like cruising home when on 88-1.
But Payne then delivered his deadly spell but Cambridgeshire eventually crept over the line at 147-8.
After two wins followed by two defeats, Bucks next face Staffordshire at Longton , starting on Sunday August 19.