A new threat will be posed to Newnham College on the final day of the May Bumps today (Saturday).
They have been the outstanding crew so far at the headship of the women's divisions, but a different boat will be doing the chasing on the fourth day.
Caius bumped Emmanuel on day three to move to second, and will be eager to get a flying start to put Newnham under pressure for the first time this week.
Pembroke have been among the division's top climbers, and will be looking to collect blades for a bump on every day by chasing down Emmanuel in third - they have so far gone from seventh to fourth.
Fitzwilliam, now in eighth, and Christ's, now in 10th, will be bidding for blades with Downing and Churchill respectively in their sights.
The other crew in the top women's division aiming to get a fourth bump of the week are Trinity Hall, who caught Girton on day three and will now head off in pursuit of Clare.
Caius rowed over at the headship of the men's top division, and it was a similar story for chasers Lady Margaret, Magdalene and Pembroke. But moving into the top five were Peterhouse, who caught Downing.
Queens' will be out to try to earn blades when they set off in pursuit of Jesus, who are currently in 10th.
Hughes Hall will be out to do similar, having risen from second in Division Two to 15th in Division One, and they will be going after a Robinson crew eager to avoid spoons.
There was a repeat of the first-day chaos in M4. Girton II went up five places, so seven now in total, to seventh, while Wolfson II have fallen from third to 12th, dropping five spots on day three alone. Other beneficaries were Darwin II, Churchill III and St Edmund's II.