This was fortunate.

He found Wilson engaged with a superior force under General Rosser, supported by infantry, and falling back before it.

Together they were strong enough to turn the tables upon the enemy and themselves become aggressive.
They soon drove the rebel cavalry back beyond Corbin's Bridge.
Fighting between Hancock and Hill continued until night put a close to it.

Neither side made any special progress.
After the close of the battle of the 5th of May my orders were given for the following morning.

We knew Longstreet with 12,000 men was on his way to join Hill's right, near the Brock Road, and might arrive during the night.