 Under Geren's management, the Rivercats won Pacific Coast League division titles in 2000 and 2001.During the winter, Geren managed the Tigres del Licey in the Dominican Baseball League, winning the league championship in the 2001–2002 season.In February 2002, Geren led Licey to a second-place finish in the 2002 Caribbean Series held in Caracas, Venezuela.