Houston and 69-year-old head coach Kelvin Sampson are 20 minutes from their first NCAA championship.Despite white-hot shooting from Florida senior Will Richard, the Cougars built a 31-28 halftime lead over the Gators in the national title game Monday night in San Antonio behind seven points from backup guard Mylik Wilson.The Gators (35-4), whose only lead came at 8-6, received 14 points from Richard as he drilled 4 of 6 3-point attempts. Houston forced Florida into nine turnovers and held All-American guard Walter Clayton Jr. scoreless.Both teams shot a tick below 38 percent in the first half as they came out nervous and played at a frantic pace that led to a slew of rushed, errant shots. The Cougars (35-4), who entered the night as the NCAA’s leading 3-point shooting team at 39.9 percent, missed their first eight 3-point attempts while the Gators missed their first six.The teams struggled from point-blank range, too. At the 17-minute mark, Florida guard Alijah Martin took it right to Houston center Joseph Tugler and tried to dunk over him. Tugler got a piece of the ball as Martin got rebuffed by the rim. Martin grabbed the rebound, but J’Wan Roberts snuffed his follow while knocking the ball off Martin out of bounds.Less than a minute later, Houston backup center Ja’Vier Francis found an open lane to the hoop but missed his powerful one-handed dunk try.