An "extreme flyball pitcher", at one point had an HR/9 innings of 1.3, way above MLB average.] Chen pitches from a three-quarters arm slot and throws a four-seam fastball averaging 91–92 mph (tops out at 95–96 mph). In addition, he throws a two-seamer, a slider, a changeup, and an occasional curveball. Chen has been described as a legitimate middle-of-the-rotation starter. An opposing scout said, "I watched Wei-Yin Chen and swore I was watching Tom Glavine. He has such an effortless delivery and an above-average change up, and knows how to pitch inside."
This Rawlings official MLB baseball was signed in blue ballpoint pen by Chen. This baseball includes a MLB hologram.
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