Summarise Strokes Gained by Round, Event or Season

Adds up shot-level strokes gained from [calculate_strokes_gained()] and adjusts each category to the field: in every round, each category is measured against the average of the players on the same course, so the four categories add up to the total and a round's total equals the strokes the player beat the field average by. Only complete 18-hole rounds are used, and team events (Zurich Classic, Presidents Cup) are left out.

Usage

summarise_strokes_gained(sg, by = c("round", "tournament", "season"))

Arguments

sg

A tibble from [calculate_strokes_gained()].

by

One of `"round"` (one row per player per round), `"tournament"` or `"season"` (per-round averages for each player).

Value

A tibble with player_id, player_name (when present), grouping columns, rounds, and sg_ott, sg_app, sg_arg, sg_putt, sg_t2g and sg_total.

Examples

# \donttest{
sg <- calculate_strokes_gained(load_shots(2026, "Sony"))
summarise_strokes_gained(sg, by = "tournament")
#> # A tibble: 120 × 11
#>    season tournament_id player_id player_name      rounds  sg_ott sg_app  sg_arg
#>     <int> <chr>         <chr>     <chr>             <int>   <dbl>  <dbl>   <dbl>
#>  1   2026 R2026006      59095     Chris Gotterup        4  0.775   0.226  0.715 
#>  2   2026 R2026006      59018     Ryan Gerard           4  0.552   1.50   0.319 
#>  3   2026 R2026006      36699     Patrick Rodgers       4  0.333   1.27  -0.0371
#>  4   2026 R2026006      52215     Robert MacIntyre      4  0.216   1.88  -0.0597
#>  5   2026 R2026006      60004     Jacob Bridgeman       4 -0.0214  0.513  0.399 
#>  6   2026 R2026006      40026     Daniel Berger         4  0.0803  1.29  -0.226 
#>  7   2026 R2026006      40250     Taylor Pendrith       4 -0.141   0.625  0.691 
#>  8   2026 R2026006      47995     Davis Riley           4 -0.562  -0.567  0.373 
#>  9   2026 R2026006      57975     Harry Hall            4  0.714   0.659  0.118 
#> 10   2026 R2026006      54628     Lee Hodges            4 -0.0367  0.199 -0.0404
#> # ℹ 110 more rows
#> # ℹ 3 more variables: sg_putt <dbl>, sg_t2g <dbl>, sg_total <dbl>
# }