Batter never reached. So the implication is out at first. Typically if I am scoring and a runner is thrown out on the bases I will put a line half way to the next base and then cross it like a T to indicate where the out was made.
Example 6-4-3 DP. Runner in 1st reached on a single....solid line home to first on the diamond in most books. Then the DP....draw solid line half way from 1st to 2nd on the diamond and then cross it like a T. Make note that out 6-4 and the number of the out of the inning it was.
Lots of ways to do it ....that is mine.