Mainz 05 secured all three points in their recent match against Union Berlin, which has helped ease the club's relegation worries. The victory was achieved through the efforts of two key players - Barreiro and Lee Jae-sung.

Barreiro played an instrumental role in the team's victory, scoring two crucial goals to help them secure a 2-1 win over Union Berlin. His first goal came in the second half, as he capitalized on a defensive error by the home side to score a well-taken goal from close range. This goal gave Mainz 1-0 lead and set the tone for the rest of the game.

Lee Jae-sung also had a significant impact on the match, providing some much-needed support for his teammates. He scored the second goal for Mainz in the 84th minute, converting a penalty kick after being fouled by Union Berlin defender. This goal sealed the deal for Mainz and helped them maintain their position in the league table.

The victory was a much-needed boost for Mainz, who have been struggling to stay afloat in the Bundesliga this season. With both Barreiro and Lee Jae-sung playing at their best, it is clear that they will be important figures for the team in the coming matches.

Overall, the performance of these two players was crucial in helping Mainz secure all three points in their recent match against Union Berlin. Their efforts will undoubtedly provide some much-needed relief for the club's relegation worries and will be a welcome sight for fans looking to see their team succeed.