North Texas Senior Golf Association
 North Texas Senior Golf Association
 The NTSGA is a group of golfers, age 50 and up, who love the game of golf and practice the true spirit of the game.

North Texas Senior Golf Association Handicap Calculation

Handicap is Current as of December 4, 2017

McCallum, Don (forward tees since June 6, 2007)

Click on course to retrieve scorecard.

Date    Course    Tee    Rating    Slope    Gross Score    Adjusted Gross    Differential    Used?    
November 1, 2017    Waterchase Golf Club   Green    65.6    118    101    101    33.9    N    
October 4, 2017    Frisco Lakes Golf Club   White    67.3    114    106    106    38.4    N    
September 26, 2017    Bear Creek Golf Club (West)   Silver    68.4    127    108    108    35.2    N    
September 20, 2017    Grapevine Golf Course - Mockingbird and Pecan   Purple    65.4    116    100    100    33.7    N    
September 6, 2017    Mesquite Golf Club   White    65.1    112    97    97    32.2    N    
August 30, 2017    Tierra Verde Golf Club   Green    66.9    117    103    103    34.9    N    
August 16, 2017    Texas Star Golf Course   Red-White    66.1    113    100    100    33.9    N    
July 19, 2017    Grapevine Golf Course - Bluebonnet and Pecan   Purple    65.8    118    88    88    21.3    Y    
July 5, 2017    Lantana Golf Club    White    68.7    119    102    102    31.6    Y    
June 28, 2017    Waterview Golf Club   Gold    68.4    116    96    96    26.9    Y    
June 14, 2017    Waterchase Golf Club   Green    65.6    118    96    96    29.1    Y    
June 7, 2017    Firewheel Golf Park (Bridges) - Champion and Masters   Red    65.5    105    97    97    33.9    N    
May 10, 2017    Grapevine Golf Course - Mockingbird and Pecan   Purple    65.4    116    102    102    35.7    N    
May 3, 2017    Ridgeview Ranch Golf Club   Silver    65.6    118    93    93    26.2    Y    
April 19, 2017    The Golf Club at Twin Creeks   White    66.7    112    102    102    35.6    N    
April 12, 2017    Tierra Verde Golf Club   Green    66.9    117    94    94    26.2    Y    
March 29, 2017    Cowboys Golf Club   Blue-Gold    67.7    125    100    100    29.2    Y    
March 22, 2017    The Tribute at the Colony   Green    66.0    110    94    94    28.8    Y    
March 15, 2017    Texas Star Golf Course   Red    64.3    108    101    101    38.4    N    
November 30, 2016    Pecan Hollow Golf Course   Gold    64.8    104    95    95    32.8    N    
  Differential = (Adjusted Gross Score - Course Rating) x (113 / Slope) rounded to tenths              Average Differential:27.4125    
  Handicap Index = Average Differential rounded to tenths (maximum 54.0)              Handicap Index:27.4    
  Rounds Used = Lowest 8 out of last 20
  USGA Equitable Stroke Control (ESC) in effect from July 1, 2018 through December 31, 2019.              Low Handicap Index:24.6    11-02-2016
  World Handicap System (WHS) in effect since January 1, 2020.