Nike Tennis Camp at Sea Colony Beach Resort

Alex is a USPTA Elite professional and a PTR certified professional who has achieved certifications in all four PTR pathways: Adult Development, Junior Development (10 & Under and 11-17) and Performance. He also holds specialized certifications in Cardio Tennis and Wheelchair Tennis. In 2021 he was named USTA's DD and Middle States teaching professional of the year and he was also named Delaware’s 2012 & 2021 PTR Pro of The Year. He was also Tennis Industry Magazine's 2013 Top 30 Under 30 professionals in the country.

Alex specializes in high performance training for all ages. During his time at Sea Colony, he has trained and helped hundreds of collegiate athletes achieve their goals. He uses the newest innovative methods and technology available in the industry.

Before rejoining Sea Colony, Alex was the Director of Tennis of Cattail Creek Country Club in Howard County, MD. As a player, he competed in ITF and Futures Circuit in the United States, Mexico and Europe. As a junior, Justiniani trained at the world renowned Van Der Meer Tennis Academy in Hilton Head Island, SC.

The winningest coach in the history of the men's program, he also served as the Director of Tennis from 2011 to 2014. In December of 2012, Willenborg was named the USTA/ITA National Campus QuickStart Provider of the Year for his work with both the QuickStart and 10-and-Under Tennis programs in Baltimore County. He also ranks second in the history of the JHU women's program with 91 career wins.

Since taking over the program in 2005, the Johns Hopkins men's team has amassed 264 wins (264-73 • .783). The Blue Jays' success in the Centennial Conference has been even more impressive as they have gone 129-3 (.977) since 2005 and won 84 straight conference matches from April 2006 to March 2016. During Willenborg's tenure, Hopkins has won 14 Centennial Conference titles and have made 14 straight NCAA Tournament appearances, including four quarterfinals appearances.

During his tenure, the Blue Jays have produced six Centennial Conference Players of the Year, one Centennial Conference Rookie of the Year, one ITA National Rookie of the Year, one CoSIDA Academic All-American, 32 ITA All-Americans, 88 all-conference selections and 84 ITA Scholar-Athletes as well as numerous nationally ranked singles players and doubles teams. In addition, JHU has sent 16 singles players and 10 doubles teams to the NCAA Championships.

Prior to Willenborg's arrival, the men's team had never been ranked nationally or ranked higher than 16th in the Atlantic South region. By the end of his first season, the men were ranked 10th in the region and just 16 months after he was hired, the Blue Jays earned their first ever national ranking (30th). After falling out of the rankings early in the spring of 2006, the program regained its national ranking in May 2006 and has appeared in every poll since.

In six seasons as head coach of the Blue Jay women, Willenborg won a then-record 91 matches and posted a .758 winning percentage. He led Hopkins to four straight Centennial Conference titles, including the program's first in 2007. The Blue Jays made four straight NCAA Tournament appearances, including three consecutive Sweet 16 trips in Willenborg's final three seasons. His players earned 22 All-Centennial Conference selections (12 singles, 10 doubles) and five ITA All-America accolades (1 single, 4 doubles). He also coached the 2007 Centennial Conference Player of the Year.

Willenborg brings outstanding amateur, collegiate and professional experience to Hopkins. His amateur career was highlighted by a USTA National Clay Court Championship and a top-5 national junior ranking. He was selected to the prestigious Junior Davis squad and competed at the French Open, Wimbledon and US Open.