He then moved to the United States, where he played at Artesia High School in Lakewood, California before going back to the Dominican Republic.

Throughout his 20-year professional career, Filion has played in the Dominican Republic, France, Puerto Rico, Uruguay and Venezuela; in 2007 he was named the LIDOBA Finals MVP.

[14] From 1998 to early 2000, he was in the United States with Artesia High School; he then returned to the Dominican Republic and played again for Mauricio Báez, winning the Distrito Nacional league title.

In 2004 he went back to Puerto Rico and signed with Criollos de Caguas,[16] another BSN team, and averaged 11.5 points, 4.9 rebounds and 0.9 assists in 18 games.

In 2005 he played for Sameji in the Baloncesto Superior de Santiago, winning the league title and being named in the All-Star team; he scored 23 points in the 7th and final game of the championship series against Club Domingo Paulino.

[17] He later played with Metros de Santiago in the first edition of the LIDOBA, the Dominican national basketball league, and averaged 15.5 points, 8.7 rebounds, 3.6 steals and 1.8 blocks per game.

He then made his debut with the senior national team in 2003 and played during the 2003 Centrobasket, averaging 7 points and 3.7 rebounds per game, winning the silver medal.

In 2005 he was part of the Dominican squad at the 2005 FIBA Americas Championship, where he found limited playing time and averaged 3.9 points and 1.9 rebounds per game.