[4] Barbosa played in the 40th Chess Olympiad where he manned Board 2 due to his 2nd-best ELO of 2554 and scored 7/11 (63.6% winning rate), with an overall TPR of 2668.

:[6] Barbosa also played in the 18th edition of the Asian Cities Chess Championship held in Tagaytay City, Cavite, Philippines where he manned Board 1 for Team Tagaytay and scored 7.0/9, second-best for the team behind GM John Paul Gomez, going undefeated with 5 wins and 4 draws for a high 77.8% winning rate.

[18] In the 13th BCC Blitz, he edged out Chinese GM Lu Shanglei on better tie-breaks as both scored 12.0 points in 14 games.

[19] Barbosa copped first place in the 6th Kolkata Open (also called the 19th International Open Grandmasters Chess) held from March 18–27, 2014 at Gorky, Sadan, Kolkata, West Bengal, India where he ended up tied with GM Lalith Babu of India both with 7.5/10 but won the title due to superior tie-breaks (56.5-55.0) where he registered a TPR of 2688.

[20][21] Barbosa took part in the 3rd Millionaire Chess Open that took place at Harrah's Resort, Atlantic City from October 6–10, 2016.

[22] In 2017, Barbosa took part in the 45th Annual World Open held from June 29 – July 4, 2017 in Philadelphia, where he landed in the top ten finishing in a tie for 7th place with a score of 6.5/9.

He could have won the overall title as he was tied with the eventual winner GM Tigran L. Petrosian of Armenia going into their last round match.

His victory in the penultimate round against countryman and fellow GM Julio Sadorra proved to be a factor as it ended at 4 p.m. while his last round match against Petrosian started immediately at 4:30 p.m.[23][24] Barbosa won the 6th Washington Int 2017 held from August 12–16, 2017 at Rockville, USA with a score of 7.0/9 bagging the US$4,400 first prize along the way.