Early life

Marion was born in Waukegan, Illinois and played high school basketball in Clarksville, Tennessee at Clarksville High School, where he was a teammate of future NBA player Trenton Hassell.

After high school he played collegiate basketball at Vincennes University, a junior college in Indiana, for two years before transferring to the University of Nevada-Las Vegas in 1998. In his second year with Vincennes, Marion played 36 games and averaged 23.5 points and 13.1 rebounds. He was also the 1998 NJCAA Male Student Athlete of the Year.

NBA career

Phoenix Suns

Marion was selected by the Suns in the first round and ninth overall in the 1999 NBA Draft. Showing explosive scoring potential and double-digit rebounding ability by his sophomore season, he was selected to the Western Conference All-Star team for the first time in 2002-03 season. In 2004 he was selected to the US Olympic men's basketball team.

In 2005, Marion was named a reserve on the Western Conference All-Star Team and selected to the 2004-05 All-NBA Third Team. That year he became the first player since David Robinson in 1991-92 to average in the top five in rebounding and steals since the league began tracking steals in 1973, a feat he repeated in 2005-06. During the 2005 All-Star Weekend, Marion teamed up with WNBA Rookie of the Year Diana Taurasi of the Phoenix Mercury, and Suns legend Dan Majerle in the RadioShack Shooting Stars to run away with the title. Marion was also selected as a Western Conference reserve on the 2006 All-Star team, and the 2007 All-Star team.

The 2005-06 NBA season was perhaps the best season of his career. He was the only player in the NBA ranked in the top 20 in points, rebounds, steals, blocks, field goal percentage and minutes. He finished the season leading the Suns in points per game (21.8), rebounds per game (11.8), blocks per game (1.7), and steals per game (2.0). Marion also ranked 3rd in efficiency. He helped fill in the void left by star Amar'e Stoudemire, who missed nearly the entire season due to injury. Marion also earned a spot in the NBA All-Star Game for the third time.

During the 2006-07 season, only Marion and superstar Kevin Garnett ranked in the top 40 in points per game, rebounds per game, field goal percentage, blocks per game, steals per game, and minutes per game. He was named to his fourth NBA All-Star Team and collected 18 points, eight rebounds, four assists and two steals in 22 minutes in his hometown of Las Vegas at the 2007 contest.

Following a summer filled with rumors and trade speculation involving possible deals with the Boston Celtics, Los Angeles Lakers, and Utah Jazz, Marion requested a move. Citing the rumors and a refusal on the part of Phoenix management to negotiate a contract extension, Marion called his relationship with the Suns a "bad marriage", and stated in September 2007 it was time for him to leave Phoenix. By the start of the season, though, Marion continued to play well for the Suns.

Miami Heat

On February 6, 2008, the Phoenix Suns traded Shawn Marion and teammate Marcus Banks to the Miami Heat for center Shaquille O'Neal. His last basket with the Heat was a game-winning dunk against the Chicago Bulls.

Toronto Raptors

On February 13, 2009, Marion was traded to the Toronto Raptors along with Marcus Banks and cash considerations for Jermaine O'Neal, Jamario Moon and a future conditional draft pick.

Dallas Mavericks

On July 9, 2009, Marion signed a five-year $39 million contract and was immediately traded to the Dallas Mavericks as part of a four-team swap among Raptors, Mavericks, Memphis Grizzlies and Orlando Magic. He won the first championship of his career in the 2010-11 season when the Dallas Mavericks defeated the Miami Heat 4-2 in the 2011 NBA Finals.

On April 13, 2011, Marion became the fifth man to compile 1,500 steals and 1,000 blocks in the NBA. He joined Hakeem Olajuwon, Karl Malone, Kevin Garnett and Julius Erving in the exclusive club.

In the 66 game 2011-12 season, Marion led Dallas in rebounding with 7.4 rebounds per game. Marion was the only player in the NBA 6-foot-7 or shorter to lead his team in rebounding in 2011-12. He also led Dallas in double-doubles with 12. Marion scored 29 points against his former team, the Phoenix Suns, on January 23, 2012, which tied his highest-scoring game as a Maverick. Marion moved into 100th place on the NBA’s all-time scoring list on March 3.

Marion appeared in his 1,000th career regular-season game against the Suns on December 27, 2012. In January 2013, Marion was fined $25,000 by the NBA for publicly criticizing officiating. After an overtime loss to the Oklahoma City Thunder, he said, "It's hard to beat anybody when you're playing five on eight." Marion passed Rod Strickland for 25th place on the NBA’s all-time steals list on March 6, 2013. Marion led the Mavericks in rebounds again with 525 (7.8 per game).

On January 3, 2014, he passed the 17,000-point mark and joined Olajuwon, Malone and Garnett as the only players with at least 17,000 points, 9,000 rebounds, 1,500 steals and 1,000 blocks.

Cleveland Cavaliers

On September 9, 2014, Marion signed with the Cleveland Cavaliers. On December 26, 2014, he recorded his 10,000th career rebound in a 98-89 win over the Orlando Magic. In January 2015, Marion announced his intention to retire at the end of the 2014-15 season.

After missing 13 straight games with a strained left hip, Marion returned to action on March 16 against the Miami Heat. In eight minutes off the bench, he recorded five points and one rebound in the 92-106 loss.

Retirement

On June 18, 2015, following the Cavaliers' NBA Finals loss to the Golden State Warriors, Marion announced his retirement from the NBA after 16 seasons.

National team competition

Marion played for the senior United States national team in the 2002 FIBA World Championship and the 2004 Athens Olympics. He was named to the 2006 USA men's senior national team but he was forced to withdraw before the tournament began due to a knee injury. The squad finished third in the 2006 FIBA World Championship without him.

NBA career statistics

Legend
GP	Games played	GS	Games started	MPG	Minutes per game
FG%	Field goal percentage	3P%	3-point field goal percentage	FT%	Free throw percentage
RPG	Rebounds per game	APG	Assists per game	SPG	Steals per game
BPG	Blocks per game	PPG	Points per game	Bold	Career high

†	Denotes season in which Marion won an NBA championship

Regular season

Year	Team	GP	GS	MPG	FG%	3P%	FT%	RPG	APG	SPG	BPG	PPG
1999-00	Phoenix	51	38	24.7	.471	.182	.847	6.5	1.4	.7	1.0	10.2
2000-01	Phoenix	79	79	36.2	.480	.256	.810	10.7	2.0	1.7	1.4	17.3
2001-02	Phoenix	81	81	38.4	.469	.393	.845	9.9	2.0	1.8	1.1	19.1
2002-03	Phoenix	81	81	41.6	.452	.387	.851	9.5	2.4	2.3	1.2	21.2
2003-04	Phoenix	79	79	40.7	.440	.340	.851	9.3	2.7	2.1	1.3	19.0
2004-05	Phoenix	81	81	38.8	.476	.334	.833	11.3	1.9	2.0	1.5	19.4
2005-06	Phoenix	81	81	40.3	.525	.331	.809	11.8	1.8	2.0	1.7	21.8
2006-07	Phoenix	80	80	37.6	.524	.317	.810	9.8	1.7	2.0	1.5	17.5
2007-08	Phoenix	47	47	36.4	.526	.347	.713	9.9	2.1	2.0	1.5	15.8
2007-08	Miami	16	15	37.6	.459	.258	.690	11.2	2.5	1.9	.9	14.3
2008-09	Miami	42	41	36.1	.482	.200	.788	8.7	1.8	1.4	1.1	12.0
2008-09	Toronto	27	27	35.3	.488	.154	.806	8.3	2.3	1.1	.8	14.3
2009-10	Dallas	75	75	31.8	.508	.158	.755	6.4	1.4	.9	.8	12.0
2010-11†	Dallas	80	27	28.2	.520	.152	.768	6.9	1.4	.9	.6	12.5
2011-12	Dallas	63	63	30.5	.446	.294	.796	7.4	2.1	1.1	.6	10.6
2012-13	Dallas	67	67	30.0	.514	.315	.782	7.8	2.4	1.1	.7	12.0
2013-14	Dallas	76	76	31.7	.482	.358	.785	6.5	1.6	1.2	.5	10.4
2014-15	Cleveland	57	24	19.3	.446	.261	.765	3.5	.9	.5	.5	4.8
Career		1,163	1,062	34.5	.484	.331	.810	8.7	1.9	1.5	1.1	15.2
All-Star		4	0	19.5	.575	.000	.500	6.5	3.0	1.5	.5	12.5

Playoffs

Year	Team	GP	GS	MPG	FG%	3P%	FT%	RPG	APG	SPG	BPG	PPG
2000	Phoenix	9	9	31.2	.419	.167	.818	8.8	.8	.7	1.6	9.1
2001	Phoenix	4	4	34.8	.371	1.000	.857	8.3	.8	1.5	1.5	14.8
2003	Phoenix	6	6	47.0	.374	.321	.846	11.7	2.0	1.8	1.8	18.5
2005	Phoenix	15	15	42.3	.484	.419	.769	11.8	1.5	1.4	1.7	17.6
2006	Phoenix	20	20	42.5	.489	.314	.881	11.7	1.6	1.9	1.2	20.4
2007	Phoenix	11	11	41.4	.500	.353	.667	10.4	1.2	1.5	1.7	16.9
2010	Dallas	6	6	24.7	.407	.000	.800	4.2	1.0	.2	.5	8.7
2011†	Dallas	21	21	32.9	.467	.000	.851	6.3	2.1	1.0	.9	11.9
2012	Dallas	4	4	35.0	.425	.286	.900	8.0	1.0	.3	1.3	11.8
2014	Dallas	7	7	27.6	.407	.222	.636	5.3	1.9	.9	.1	8.4
2015	Cleveland	6	0	4.2	.167	.000	.000	1.0	.2	.3	.0	.3
Career		109	103	35.2	.456	.318	.814	8.6	1.4	1.2	1.2	13.9

[ Source: Wikipedia ]