Jessica Pegula reignited her challenge at the season-ending WTA Finals on Tuesday, defeating Ukraine's Marta Kostyuk 6-2, 7-5 and keeping alive her hopes of reaching the semi-finals, according to The Guardian's report on the match. The report is bylined to Agencies.

The Guardian reported that Pegula won the contest in straight sets after losing her opening group match to Coco Gauff. The outlet said the victory kept her on course for a semi-final berth at the tournament.

According to the same report, Kostyuk had entered the event as a "late replacement" and was eliminated. The Guardian's summary describes her exit as the result of the match, and it places the outcome within the group stage of the finals.

The Guardian's headline frames the result as a continuation of Pegula's challenge at the tournament, which had been in doubt after her defeat by Gauff. The summary treats the win as the step that keeps her in contention, rather than as a guarantee of advancement.

The report did not provide a full account of the match, and the excerpt available for this story does not include game-by-game details or the standings that would settle Pegula's semi-final chances. The Guardian's summary says only that she remains on course, and it does not state how many group matches remain for her. Readers seeking those details should consult the full report.

Sources: The Guardian: Pegula keeps WTA Finals semi-final hopes alive with straight-sets win over Kostyuk.