Using golangs regex for parsing sports score

I'm trying use golang regex for parsing sports score, but can't found a reason, why it doesn't parse all scores parts, but only the first and the last.

package main

import (
	"fmt"
	"regexp"
)

func main() {
	var FirstQuarterBasketballRegexp = regexp.MustCompile(`^(\d+:\d+)\s\((?:(\d+:\d+)(?:,\s)?)+\)$`)
	fmt.Printf("%q\n", FirstQuarterBasketballRegexp.FindAllStringSubmatch("102:72 (28:17, 27:15, 24:14, 23:26)", -1))
}

It prints a string

[["102:72 (28:17, 27:15, 24:14, 23:26)" "102:72" "23:26"]]

Why it contains only 3 elem in a slice?

It returns 3 elements, as there is 0th group (the whole string), and 2 capturing groups:

1.	[0-6]	`102:72`
2.	[29-34]	`23:26`

Now, you should think about what you need, and only use what you need.

Perhaps, you are looking for (\d+:\d+) that will return

102:72
28:17
27:15
24:14
23:26

Try this code (sample program is available here):

func main() {
    var FirstQuarterBasketballRegexp = regexp.MustCompile(`\d+:\d+`)
    fmt.Printf("%q\n", FirstQuarterBasketballRegexp.FindAllStringSubmatch("102:72 (28:17, 27:15, 24:14, 23:26)", -1))
}

Output:

[["102:72"] ["28:17"] ["27:15"] ["24:14"] ["23:26"]]