| His ability to chase down shots made Federer indecisive and forced him into uncustomary unforced errors. |
| She made 24 unforced errors in the first set and benefited from a controversial line call in the tie-break to save a match point. |
| With their unforced errors, they were the main reason for the goals against them. |
| Weber's high back-swing descends in a mild, unforced manner and continues throughout the follow-through in a long, extended fashion. |
| Her loss was largely of her own doing, with 51 unforced errors and five double-faults, including on match point. |
| They both are power players, which usually leads to a lot of unforced errors. |
