Basketball in Flint In February 1927, two weeks after being sent home due to academic deficiencies, Molenda signed a contract to pay professional basketball for the Industrial Mutual Association in
Flint, Michigan.
Football for the New York Yankees In June 1927, he signed a contract to play professional football for the
New York Yankees team organized by sports promoter,
C. C. Pyle, and featuring
Red Grange. He played for the Yankees through the complete 1927–1928 season. He scored the Yankees' only touchdown in a 7-0 win on Wrigley baseball field in Los Angeles in January 1928.
Baseball in Texas In December 1927, Molenda signed a contract to play professional baseball for the Waco team in Texas League starting in March 1928. He had been considered one of the top pitchers in the Detroit high school system. When he reported to Waco in March 1928, he brought his new bride with him, and the
Associated Press reported that a number of major league clubs had been angling for his services. In late June 1928, Molenda was sent to the Texarkana club in the Lone Star League.
Baseball and football in Green Bay As a fullback, Molenda became one of the stars of the early Packers teams that won NFL championships in 1929, 1930, and 1931.
1928 Packers In November 1928, the
Green Bay Packers purchased Molenda's contracts from Charlie Pyle, and one Wisconsin newspaper wrote: "Packer football stock climbed a notch or two here Thursday when Bo Molenda, one of the best fullbacks in the National Football league, joined the Big Bay Blues. ... With Molenda in the fold, the Packer squad is beginning to figure on a national championship. A big powerful fullback like Molenda rounds out the Bay machine to a nicety."
1929 Green Sox After playing several games with the Packers, Molenda went to California in early 1929 where he pitched in the winter league. In June 1929, Molenda returned to Green Bay to establish his residence there and signed a contract to play for Green Bay's professional baseball team, the Green Sox of the Bay Fox River Valley League. Molenda had success for the Green Sox, striking out 14 batters in six innings of relief pitching in one game, striking out 10 and 11 in other games, and pitching a three-hit shutout. Molenda pitched for the Green Sox again in the summer of 1931.
1929 Packers Even before the first game of the 1929 season, the Packers, with Molenda at fullback, were being touted as "the greatest team ever." The Packers won their first NFL championship in 1929 after a key 20-6 win over a New York Giants team led by Molenda's former Michigan teammate,
Benny Friedman. Molenda scored a touchdown and kicked two extra points in the game as Molenda and
Johnny Blood were credited with leading the Packers offense. The 1929 game against the Giants has gone down as one of the great games in Packers' history, in part due to the fact that only 12 Packers played in the game, with the 12th player coming into the game as a last minute substitute. Newspapers described Molenda as the "sparkplug" and the workhorse of the 1929 Packers: "Molenda was the workhorse. He played 60 minutes in nearly every game." The 1929 Packers were the first NFL team to finish the season undefeated with a 13-0 record as the undisputed NFL champions. After the 1929 season, Molenda worked for an engineering concern.
1930 and 1931 Packers Molenda continued to play fullback for the Packers in 1930 and 1931, as the Packers won three consecutive NFL championships.
New York Giants In 1931, the Packers sold Molenda to the
New York Giants, where he played until 1936. He was credited with "carrying the brunt of the Giants' victorious offense in the famous "gumshoe game" against the
Chicago Bears in 1934. ==Football coach and service in World War II==