Who did Lou Gehrig replace at first base in the first game of his consecutive games played streak?

When Lou Gehrig started in his first game as a New York Yankee on June 2, 1925 (he had pinch hit the day before to begin his streak), he replaced Wally Pipp at first base. Pipp had asked for a day off to recover from a headache, and played in only one game the rest of that season for the Yanks. He was released at the end of the year, and signed by the Cincinnati Reds, where he spent three years before retiring in 1928.