Career
He also represents the Serbian national basketball team internationally. Standing at 2.02 m (6 ft 7 1⁄2 in), he plays the small forward position. Simonović began his professional career in 2003 with Lavovi 063 where he stayed for two seasons.
In 2005, he then moved to Ergonom.
In 2006, he moved the Belgian team Oostende, only being there for half season. In the summer of 2006, he signed with Serbian team Hemofarm, staying with them until the summer of 2008.
He then moved to the Montenegrin team Budućnost Podgorica, staying with them for three full seasons. On July 18, 2011, Simonović signed a contract with German team Alba Berlin.
Over the season he averaged 6.7 points and 2.6 rebounds per game in the German League.
In the summer of 2012, he signed a contract with Crvena zvezda. After club legend Igor Rakočević retired from the professional basketball in 2013, Simonović became next team captain. In his first season in the Euroleague, he averaged 4.8 points and 2.9 rebounds.
In August 2014, he signed with the French team Élan Béarnais Pau-Orthez.
On September 30, French Cup game against Orléans Loiret Basket, Simonović made a buzzer beater three pointer to edge Orléans by 72–70. He led his team in scoring with 27 points, while also having 9 steals, 5 assists and 4 rebounds.
On April 21, 2015, he had the best game since coming in the club, scoring season-high 31 points in a 89–96 loss to Limoges Center for Security Policy. Pau-Orthez finished the season in the French League in 13th place. Over 26 games played, Simonović averaged 13.4 points, and 3 rebounds on 39.6% shooting from the field
He also scored 20 and more points four times during the season.
On September 30, 2015, he signed a short-term contract with Crvena zvezda. On November 19, 2015, he re-signed with the club for the rest of the season. He also represented Serbia at the EuroBasket 2015.
In the first phase of the tournament, Serbia dominated in the toughest Group B with 5-0 record, and then eliminated Finland and Czechoslovakian Republic in the round of 16 and quarterfinal game, respectively.
However, they were stopped in the semifinal game by Lithuania with 67–64, and eventually lost to the host team France in the bronze-medal game with 81–68. Simonović was mostly used as a three-point and defensive task specialist.
He averaged 2.3 points and 2.0 rebounds per game on 30.8% shooting from the three-point line.