be below par
be under par

After having been one under par, he suddenly was two over.

He was the only player to reach five under par.

For the first time since 1963, no player shot under par during the final round.

Today's final cut for the last 50 seems likely to fall at one under par.

With three to play he stood on nine under par, just four off the lead.

He had a 36-hole total of 133, 11 under par.

Of the 156 players in the field, 111 shot under par.

He added another at the 15th to lead on four under par.

From going under par for the first time, he's now +2.

We shot a 71 in the third round, still under par.