The 1998–99 Michigan State Spartans men's basketball team represented Michigan State University in the 1998–99 NCAA Division I men's basketball season. The team played their home games at Breslin Center in East Lansing, Michigan and were coached by fourth-year head coach, Tom Izzo. The Spartans finished the season 33–5, 15–1 to win the Big Ten regular season championship by three games. MSU defeated Northwestern, Wisconsin, and Illinois to win the Big Ten tournament and received the conference's automatic bid to the NCAA tournament. As the No. 1 seed in the Midwest region, they defeated Mount Saint Mary's and Ole Miss to advance to their second straight Sweet Sixteen. In the Sweet Sixteen they defeated Oklahoma to advance to the school's first Elite Eight since 1979. In the Elite Eight, they defeated Kentucky to earn a trip to the Final Four for the first time since 1979. There they lost No. 1-ranked Duke. The 33 wins marked a school record for wins in a season. Previous season The Spartans finished the 1997–98 season 22–8, 13–3 in Big Ten play to earn a share of the Big Ten regular season championship. They lost in the quarterfinals of the inaugural Big Ten tournament to Minnesota. Michigan State received an at-large bid as a No. 4 seed in the NCAA tournament, their first trip to the Tournament under Tom Izzo. They defeated Eastern Michigan and Princeton to advance to the Sweet Sixteen before losing to No. 1-seeded North Carolina. Season summary The Spartans, fresh off their first trip to the Sweet Sixteen since 1990, started the season ranked No. 5 in the country. Michigan State was led by juniors Mateen Cleaves (11.7 points and 7.2 assists per game) and Morris Peterson (13.6 points and 5.7 rebounds per game). The Spartans played three top seven teams in their first seven games. MSU lost all three: at No. 7 Temple, versus No. 4 Duke at the United Center in Chicago, Illinois, and at No. 1 Connecticut. However, the Spartans finished the non–conference season without another loss and a record of 11–3 while ranked No. 14 in the country. After losing their first Big Ten game to No. 24 Wisconsin, the Spartans won the remaining 15 games in conference. The wins included wins against No. 19 Minnesota, No. 14 Iowa, at No. 18 Indiana, No. 15 Ohio State, at No. 14 Iowa, at No. 22 Minnesota, No.