2014-15 (Senior): [Spring] … Southland Conference Commissioner's Honor Roll ... Went 9-17 in singles ... Was 2-3 against the league, 5-12 at No. 1, 2-3 at No. 2 and 0-1 at No. 5 (vs. ninth-ranked Texas A&M) ... Posted a 16-11 doubles record ... His 16 doubles victories led the team ... Compiled a 12-10 record with Nico Agritelley and was 4-1 playing alongside Marco Bensley ... Winner of three of his last four singles matches and reached the semifinals of the Ojai Valley Tournament, where he fell to Grand Canyon's Adrian Legarreta, 6-3, 6-2 ... Foiled by a Grand Canyon team in semifinals of Ojai's doubles bracket ... Won four consecutive doubles matches with Bensley from March 11-21 against teams from Omaha, Texas A&M, McMurry and the University of the Southwest ... [Fall] ... Went 3-7 in singles and 7-5 in doubles with Agritelley ... Won two of four matches at the New Mexico State Aggie Invitational to finish fourth in the Crimson Draw ... Reached quarters of ITA Texas Regionals doubles brack with Agritelley, where they lost to top-seeded TCU after beating duos from Incarnate Word and Texas A&M. 

2013-14 (Junior): [Spring] … First Team All-Southland Conference in doubles with Borja Cortés … First Team Southland Conference All-Academic … Named to the Southland Conference Commissioner’s Honor Roll … Went 13-14 in singles and was 4-2 against Southland Conference opposition … Posted a 2-1 record at No. 2, 9-10 at No. 3 and 2-3 at No. 4 … Recorded the team’s most doubles’ victories with 17 … Went 17-9 overall and was 4-2 against the Southland Conference … Registered an 8-4 record at No. 1 doubles (alongside Cortés) and was 9-5 at No. 2 (1-0 with Jason Proctor and 8-5 with Nico Agritelley) … Won three of five league doubles matches with Cortés against Incarnate Word, Nicholls and Lamar … Helped team win National Invitational Tennis Tournament after teaming with Cortés to beat Grand Canyon’s Benjamin Collomb / Alexander Roggenkamp, 8-6 … [Fall] … Went 5-6 in singles and 6-5 in doubles with Cortés … Reached consolation doubles quarters at the ITA Texas Regional … Won the consolation finals at the Tennessee Chattanooga/Steve Baras Classic, 8-6 … Placed ninth in the Crimson Draw at New Mexico State Aggie Invitational after beating ACU teammates Jason Proctor and Nico Agritelley, 8-6.
 
2012-13 (Sophomore): [Spring] … All-Lone Star Conference in singles and doubles with Hans Hach … Went 10-18 in singles, which included a 5-11 mark at No. 2, 3-6 at No. 3 and 2-0 record at No. 4 … Lost his lone match at No. 1 and went 1-2 vs. LSC opponents … Finished the year ranked 17th with Hach in doubles, going 7-7 from the No. 1 position … Won his final three matches with Hach vs. McMurry, Incarnate Word and Midwestern State … Longest singles winning streak was a three-match stretch from Feb. 16 to March 2 … Went 3-3 in three-set matches and two of those victories were comeback efforts … [Fall] … Orange Flight doubles champion with Hans Hach at the Boise State Appleton Classic ... Went 4-0 with Hach at the tournament, beating teams from Oregon, Idaho State, Montana and Montana State ... Finished the fall 7-2 in doubles, which also includes a 3-3 record with Alfredo Desiati ... Went 5-5 as a singles player, competing at New Mexico State, Boise State and USTA/ITA Regionals ... Reached third round at regionals, where he fell in three set to fourth-seed Martin Poboril of Oklahoma Christian, 6-7, 7-5, 10-5.
 
2011-12 (Freshman): Completed his spring with a 9-9 singles record and 11-12 mark in doubles where he went 7-2 at the No. 1 position … Won five top-line doubles matches with Hans Hach and two with Nick Plum … Finished the year 3-1 with Michael Morris at the No. 3 position, which included postseason wins over Incarnate Word, Northwest Missouri State, and No. 31 Northern Kentucky … Played mostly at No. 5 singles where he went 4-6, but also went 3-1 at No. 4, 1-2 at No. 3 and won his lone decision at No. 2 over UT-Permian Basin’s Alvaro Sifuentes … Twice came back from a set down to win three-set battle vs. Midwestern State’s Jarrod Liston, and UC San Diego’s Kona Luu … Did not compete in the fall until the season ending Tyler College Apache Invitational where he reached the doubles semifinals with Nick Plum.
 
Personal: Given name is Guilherme Lehmkuhl Gesser … Born 13 April 1993 in Florianópolis, Santa Catarina, Brazil where he still resides … Son of Mario and Maria Gesser … 2010 graduate of Energia … Management major … Hobbies include playing soccer.