Question: Which current CBS sportscaster also announced the series 4 games when the Spurs defeated the Nets? 

Context paragraphs:
2014 NBA Finals: The 2014 NBA Finals was the championship series of the 2013–14 season of the National Basketball Association (NBA) and the conclusion of the season's playoffs.  The Western Conference champion San Antonio Spurs defeated the Eastern Conference champion Miami Heat in five games (4 games to 1) for the Spurs' fifth NBA championship in franchise history.  The Spurs outscored the Heat in the series by the largest average point differential (14.0) in Finals history.  San Antonio's Kawhi Leonard was named the Finals Most Valuable Player (MVP).

2014–15 San Antonio Spurs season: The 2014–15 San Antonio Spurs season was the 48th season of the franchise, 39th in the National Basketball Association (NBA) and 42nd in the San Antonio area.  The Spurs were the defending NBA Champions, having defeated the Miami Heat in the 2014 NBA Finals 4 games to 1.  On April 3, 2015 after their victory over the Denver Nuggets they clinched a 50+ win season for the 16th consecutive season.  The Spurs started the season slow and exceeded their previous season of 20 losses, but managed an eleven-game winning streak within the last 12 games and finished 55-27, finishing third in the Southwest on a tie breaker to the Memphis Grizzlies.  The Spurs' season ended with a Game 7 first round loss to the Los Angeles Clippers, after a layup by Chris Paul with 1 second on the clock.  The team hired former WNBA point guard Becky Hammon as an assistant head coach, making her the first full-time female assistant coach in the NBA .

1976 ABA All-Star Game: The 1976 ABA All Star Game was the 9th and final American Basketball Association All-Star Game, played at McNichols Arena in Denver, Colorado on January 27, 1976.  This time, the league abandoned the usual East vs. West format it used from the 1967-68 season onward and instead had the league's first place team at the All Star break face off against a team of ABA All Stars.  At the All Star break the Denver Nuggets were in first place, which was convenient as the Nuggets had also been selected to host the game in McNichols Arena.  Kevin Loughery of the New York Nets coached the All-Stars while Larry Brown led the Denver Nuggets.  This was the second year in a row that Loughery and Brown coached against each other in the ABA All-Star Game.  (The Nuggets went on to finish the regular season in first place at 60-24 (.714), but after beating the Kentucky Colonels 4 games to 3 in the ABA Semifinals the Nuggets lost in the 1976 ABA Finals to the New York Nets, 4 games to 2.)

Pat Summerall: George Allen "Pat" Summerall (May 10, 1930 – April 16, 2013) was an American football player and television sportscaster, having worked at CBS, Fox, and ESPN.  In addition to football, he also announced major golf and tennis events.  In total, he announced 16 Super Bowls on network television (more than any other announcer), 26 Masters Tournaments, and 21 US Opens.  He also contributed to 10 Super Bowl broadcasts on CBS Radio as a pregame host or analyst.

1973–74 Virginia Squires season: The 1973–74 Virginia Squires season was the 4th season of the Squires in the American Basketball Association.  The team finished 6th in points scored at 106.3 points per game and 9th in points allowed at 111.3 points per game.  The team was 15–27 midway through the season, but they went 13–29 in the second half of the season.  Their biggest losing streak was 6 games, with their highest winning streak being 3 games, done twice.  Despite this, they clinched the fourth and final playoff spot by 7 games.  The Squires lost to Dr. J and the New York Nets in the Semifinals in 5 games.  The money troubles that had troubled the franchise meant that the Squires were forced to trade away pivotal players of the franchise in order to provide short term stability.  Julius Erving (along with Willie Sojourner) was traded to the New York Nets for George Carter and cash before the season started.  Swen Nater was traded on November 21, 1973 to the San Antonio Spurs.  The night of the All-Star Game, it was announced that the Squires sold George Gervin to the San Antonio Spurs for $225,000.  Gervin's last game with the team was on February 1, but a court battle delayed his play with the Spurs, though it was all settled in favor of the Spurs by March 3.  This was the last season the Squires made the playoffs as they went into a tailspin for the next two season, losing over 60 games each season.

Brad Nessler: Bradley "Brad" Nessler (born June 3, 1956) is an American sportscaster, who currently calls college football and college basketball games for CBS.

2003 NBA Finals: The 2003 NBA Finals was the championship round of the National Basketball Association (NBA)'s 2002–03 season, and the culmination of the season's playoffs.  The Western Conference champion San Antonio Spurs played the Eastern Conference champion New Jersey Nets for the title, with the Spurs holding home court advantage.  The series was played under a best-of-seven format.  The Spurs defeated the Nets to win the series 4 games to 2.  Spurs Forward Tim Duncan was named the Most Valuable Player of the championship series.  The series was broadcast on U.S. television on ABC, with Brad Nessler, Bill Walton, and Tom Tolbert announcing.

1999 NBA Finals: The 1999 NBA Finals was the championship round of the shortened 1998–99 NBA season or the 1999 season.  The Western Conference champion San Antonio Spurs took on the Eastern Conference champion New York Knicks for the title, with the Spurs holding home court advantage.  The series was played under a best-of-seven format, with the first team to collect four game victories winning the series.  The Spurs defeated the Knicks 4 games to 1 to win the championship.  As of 2017, this is the last NBA Finals where neither team scored 100 or more points in any game during the series.

2014–15 Chicago Blackhawks season: The 2014–15 Chicago Blackhawks season was the 89th season for the National Hockey League franchise that was established on September 25, 1926.  The Blackhawks finished the season with a 48–28–6 record, finishing in third place in the Central Division.  They defeated the Nashville Predators in the first round of the Stanley Cup Playoffs 4 games to 2.  In the next round, they swept the Minnesota Wild 4 games to 0.  In the Western Conference Finals, the Hawks outlasted the Anaheim Ducks, winning the series 4 games to 3.  In the Stanley Cup Final, they faced the Tampa Bay Lightning.  On June 15, 2015, the team won the Stanley Cup, beating the Lightning 4 games to 2, and winning the Cup at home for the first time since 1938.  This was the Blackhawks' third Cup championship in six seasons.  Duncan Keith received the Conn Smythe trophy as MVP of the playoffs.

1997–98 San Antonio Spurs season: The 1997–98 NBA season was the Spurs' 22nd season in the National Basketball Association, and 31st season as a franchise.  After finishing with the third-worst record in 1996–97, the Spurs won the 1997 NBA Draft Lottery, dubbed as the "Tim Duncan sweepstakes."  During the offseason, the team signed free agents Jaren Jackson and Malik Rose.  Despite losing Sean Elliott for the remainder of the season to a knee injury after 36 games, the Spurs finished second in the Midwest Division with a 56–26 record, and returned to the playoffs after a one-year absence.  Duncan was named Rookie of The Year, and was selected to the 1998 NBA All-Star Game along with David Robinson.  In the playoffs, the Spurs defeated the Phoenix Suns 3–1 in the Western Conference First Round, but lost 4–1 to the Utah Jazz in the semifinals.  Following the season, Vinny Del Negro signed as a free agent with the Milwaukee Bucks, three-point specialist Chuck Person signed with the Charlotte Hornets, and Monty Williams was released.

Supporting paragraphs: 2003 NBA Finals Brad Nessler
Answer: Brad Nessler