Had both son started playing two sports (Baseball and Soccer) at a very young age as I also coached their teams. Both were above average for both sports. When youngest son became old enough he tended to practice with older son's teams (there being a 4 year difference). Older son gave up soccer rather early to play baseball and when he entered HS he would play baseball and football. Older son really loved to play Football and had the build of a lineman. He felt discouraged in HS when he stopped growing at 5'10" hoping that genetics would kick in and get him well over 6'. It never happened. But the real problem for him was though he was/is a highly intelligent individual, he really hated academics and refused to try to do well, so his eligibility to play a sport ended his HS sports participation for his last two years and he never made it to college.
Youngest son was/is a more determined person and extremely competitive, particularly against his older brother. In watching him play soccer and baseball, it was quite evident that he had athletic talent well above his pears and he was regularly the MVP of his teams. When he started playing LL Majors, the soccer and baseball practice schedules overlapped a lot and I made him choose to dedicate himself to one team or the other as it wasn't fair to either team's teammates that he would only be there half the time and be a full time starter. It was solely his choice and he chose stop soccer to play baseball.
When youngest son started JrH, he started to play travel ball as we looked for a places to raise the bar and see where he stood with with groups of more talented players. At that time, and for some reason, he said he actually wanted to excel in Track & Field and planned to get straight A's or be on the Deans List all time in order to get to a D-1 school (these were his plans without our input). All through JrH he did indeed make the Deans List every time with absolutely no coaching needed from his parents and he played just about every sport he could at school (e.g. Cross-country, Track & Field, Volleyball, Soccer, Basketball, Flag Football, Softball). This was in addition to his travel ball. He did exceptionally well at all of them and I really thought he'd choose to focus on Track & Field as he had previously expressed himself.
As he entered HS as a 9th grade Freshman he had decided that Baseball was what he loved most and that was going to be his future. I encouraged him to play other sports as I feel they have a way of enhancing various baseball skills. The biggest problem in HS was most of the sports he liked and felt he would like to play were Spring Sports. He played on the Freshman basketball team and became one of the best players (to my surprise since he really never played a lot of it). But, Baseball was still his focus and he made that Freshman year his last for basketball because the season overlapped with the start of baseball season by two weeks. He didn't like that at all, particularly since he was to be a rare Freshman to play on the Varsity Baseball Team. So, from then on is was Baseball only and I couldn't get him to do any other sport as much as I tried to encourage him with the understanding that it was always HIS decision alone.
He achieved his goal of getting a scholarship at a D-1 school. . . and NOT just any D-1 school, but at the highest levels of D-1 and chose a school in the PAC10/12. He was a two-way player in HS and thought he might do the same at college. But with the grind of a Student-Athlete, he decided not to go two-way and focus only on a position as middle infielder.
As good a baseball player as he is today, I still feel that had he played some other additional sport(s) in HS he would be even better for it.