To find the median, just sort the numbers from least to greatest and find the number in the center.
Robin's scores: 99, 102, 107, 108, 119. Median is 107.
Evelyn's scores: 125, 137, 138, 145, 145. Median is 138.
The median from Evelyn's scores is greater than the median from Robin's. Therefore, the medians do NOT support the conclusion that Robin is winning the game.