Michael Francis Welch (July 4, 1859 – July 30, 1941), nicknamed "Smiling Mickey", was a Major League Baseball pitcher. He was the third pitcher to accumulate 300 career victories. Welch was born in Brooklyn, New York, and played 13 seasons in the major leagues, three with the Troy Trojans, and 10 with the New York Gothams/Giants. He was very successful with an effective curveball, a change of pace, and a version of the screwball. During his 13 major league seasons, he posted 20 or more wins nine times, seven in succession.