Steve Johnson, facing camera, and Tennys Sandgren embrace after the Houston final on Sunday.

An emotional Steve Johnson celebrates his second Houston title nearly a year after his father, Steve Johnson Sr., passed away.

Steve Johnson goes back-to-back on Sunday at the Fayez Sarofim & Co. U.S. Men's Clay Court Championship in Houston.

American Tennys Sandgren plays in his first ATP World Tour final on Sunday in Houston.

Steve Johnson plays in his second Houston final on Sunday.

Max Mirnyi and Philipp Oswald lift the trophy in Houston.

Philipp Oswald and Max Mirnyi celebrate their doubles title in Houston with the traditional pool dive.

Steve Johnson advances to the Houston final for a second straight year.

Steve Johnson is presented with the Langston Trophy for sportsmanship in Houston.

A year ago, Tennys Sandgren made his ATP World Tour debut in Houston. At the same event, the American is now into his first tour-level final.

No. 8 seed Tennys Sandgren ousts 39-year-old Ivo Karlovic in Houston Saturday to advance to his maiden ATP World Tour final.

Philipp Oswald and Max Mirnyi end the seven-match winning streak of Bob Bryan and Mike Bryan Friday evening in Houston.

Defending Houston champion Steve Johnson ousts top seed Isner to move within two victories of retaining his title.

#NextGenATP American Taylor Fritz beats third seed Jack Sock to reach his second ATP World Tour semi-final.

John Isner hits his 10,000th ace on Friday, becoming the fourth player to join the elite group.

#NextGenATP American Taylor Fritz advances to his first ATP World Tour semi-final on clay Friday by beating third seed Jack Sock in Houston.

Croatian Ivo Karlovic, 39, becomes the oldest ATP World Tour semi-finalist since 1993 when Jimmy Connors did so in San Francisco.

Mike Bryan, left, and Bob Bryan are going for their seventh Houston doubles team title this week.

Jack Sock pulls off a tweener against Horacio Zeballos on Thursday in Houston.

John Isner wins his eighth match in a row on Thursday in Houston.

The boys and girls who play at Sunnyside Park in Houston will soon have like-new tennis courts.

The courts at Sunnyside Park in Houston will soon be resurfaced thanks to ATP World Tour stars.

Mike Bryan, Bob Bryan, Frances Tiafoe and John Isner all donated money to help resurface the courts at Sunnyside Park in Houston.

Bob Bryan and Mike Bryan drop just two games to reach the Fayez Sarofim & Co. U.S. Men's Clay Court Championships quarter-finals on Wednesday.

Nick Kyrgios will carry a 4-0 FedEx ATP Head2Head record into his clash with Ivo Karlovic.

Denis Kudla takes on Ivo Karlovic in the Houston second round Wednesday.

#NextGenATP American Taylor Fritz moves to 6-0 in final-set tie-breaks this year at all levels with a win against Tim Smyczek Tuesday night.

Defending champion Steve Johnson saves seven of eight break points to defeat fellow American Ernesto Escobedo Tuesday evening in Houston.

Defending champion Steve Johnson comes within two points of defeat Tuesday in Houston, but ousts fellow American Ernesto Escobedo in three sets.

Ernesto Escobedo, who made the semi-finals in Houston last year, loses to defending champ Steve Johnson Tuesday.

American Ryan Harrison, the No. 7 seed in Houston, hits 11 aces in a victory against Serbian Miomir Kecmanovic on Tuesday.

Nick Kyrgios, who won the title earlier this year in Brisbane, fulfills media obligations before making his Houston debut Wednesday against Bjorn Fratangelo.

Brothers Ken Skupski and Neal Skupski drop just five first-service points to win their opening-round match Tuesday in Houston.

Ivo Karlovic wins his first match as a 39-year-old against Taro Daniel at the Fayez Sarofim & Co. U.S. Men's Clay Court Championship on Tuesday.

German Dustin Brown, who is playing doubles in Houston with #NextGenATP American Frances Tiafoe, participates in a Ladies' Day Clinic Tuesday.

Frances Tiafoe earns his first tour-level clay-court win (1-5) against wild card Mackenzie McDonald at the Fayez Sarofim & Co. U.S. Clay Court Championship Monday.

Denis Kudla earns his third career tour-level victory on clay at the Fayez Sarofim & Co. U.S. Clay Court Championship against former champion Fernando Verdasco.

American Tennys Sandgren earns his seventh tour-level win of the season by beating Blaz Kavic. Sandgren had two tour-level triumphs prior to 2018.

Bjorn Fratangelo loses just five points on serve and breaks Jordan Thompson five times Monday in Houston to oust the Australian.

Nick Kyrgios, this year's Brisbane champion who is debuting in Houston, loses his opening-round doubles match Monday with partner Matt Reid.

Switzerland's Henri Laaksonen wins his first tour-level match of the year on Monday in Houston against German Dustin Brown.

German Dustin Brown, who beat the defending champion in his two previous Houston appearances, falls short against Swiss Henri Laaksonen Monday.

Fresh off his maiden ATP World Tour Masters 1000 title in Miami, top seed John Isner attempts to win his second Houston title this week.

Jack Sock, the 2015 Fayez Sarofim & Co. U.S. Men's Clay Court Championship winner, is the third seed in Houston this year.

Ernesto Escobedo and coach Peter Lucassen are feeling positive about Escobedo's 2018.

Stefan Kozlov, Taylor Fritz and Mackenzie McDonald, three of 15 Americans competing in the Houston main draw, at the players' party on Sunday evening.

Ernesto Escobedo, who faces Steve Johnson in the first round, and Dustin Brown, who plays Henri Laaksonen, enjoy the Houston players' party Sunday.

No.4 seed Nick Kyrgios warms up before his opening match at the Fayez Sarofim & Co. U.S. Men’s Clay Court Championship.

Frances Tiafoe and Tennys Sandgren partake in a kids clinic before main draw play at the Fayez Sarofim & Co. U.S. Men’s Clay Court Championship gets underway.

Frances Tiafoe warms up with a young fan ahead of the Fayez Sarofim & Co. U.S. Men’s Clay Court Championship in Houston, Texas.

#NextGenATP American Taylor Fritz, who made the Round of 16 at Indian Wells, practises Saturday in Houston ahead of his first-round match against Tim Smyczek.

Fifth seed Fernando Verdasco, the 2014 Fayez Sarofim & Co. U.S. Men's Clay Court Championship winner, will open his 2018 run against a qualifier.

Eighth seed Tennys Sandgren, who is making his second main-draw appearance in Houston, will play Blaz Kavcic in the first round.

Ernesto Escobedo, who advanced to the semi-finals in Houston in 2017, assists at a kids' clinic on Saturday at the River Oaks Country Club.

Recent Delray Beach Open doubles champion Jackson Withrow (w/Jack Sock) spends time helping kids at the River Oaks Country Club on Saturday.

Americans Mackenzie McDonald and Ernesto Escobedo spend time with local kids at the River Oaks Country Club Saturday before beginning their Houston campaigns.