Times are irrelevant compared to others but if you always trial your horses using the same video/graphic specs and keep track of your times they are not irrelevant to you. That being ~ Are my horses getting faster? Getting faster is good of course but of equal importance in your trials is which horses consistently win or hit the board. These horses will usually run well in the league.
Only when you race against others will you find out how they compare. Which reminds me... has anyone seen that confounded league???
This almost complete ignorance of the league has turned off a lot people who were really into the game and were giving this game and board life.
