Let's compare Shane's Cup performance with that of the other players on the team during
the Van Boening era. Shane has played in the Mosconi Cup for 15 years now, 2007-2021.
Team USA's record in matches won and lost over that 15-year period:
singles -- 49-87 (winning percentage of 36.0%)
doubles -- 44-61 (41.9%)
teams -- 7-8 (46.7%)
total -- 100-156 (39.1%)
Shane's record over that 15-year period:
singles -- 16-25 (39.0%)
doubles -- 17-23 (42.5%)
teams -- 7-8 (46.7%)
total -- 40-56 (41.7%)
Team USA's match record over that 15-year period
excluding Shane's matches:
singles -- 33-62 (34.7%)
doubles -- 27-38 (41.5%)
So, looking at matches in which Shane has played vs. those in which he did not play, Shane has done a little better than his teammates in singles (39% vs. 35%) and pretty much the same in doubles (42.5% vs. 41.5%).
If we count a full point for a win or loss in singles matches, half a point for a win or loss in doubles matches, and one-fifth of a point for a win or loss in the teams matches, we have a measure of the overall contribution of a player to the match scores:
Team USA's match record 2007-2021 -- 100-156 (39.1% winning percentage)
Shane's contribution -- 25.9-38.1 (40.5%)
Contribution of other team members -- 74.1-117.9 (38.6%)