Complex sentence: In 1899, Joss began to play for a team in Oshkosh, earning $10 a week ($in today's dollars), and after the players' salaries were frozen by team owners, later joined the junior team in Manitowoc as a second baseman.
Split into simpler sentences: In 1899, Joss played for a team in Oshkosh, earning $10 per week ($in today's dollars). After player salaries were frozen by team owners, Joss joined the junior team in Manitowoc as a second baseman.