from the Del Mar website:

With the exception of one new bet, Del Mar's 2010 wagering options will mirror those of past seasons when the seaside course "where the turf meets the surf" rolls out its seven-week season starting Wednesday, July 21.

The new bet is one that has proven highly popular at other racing venues and is expected to find a happy home among Del Mar's faithful. It is a 50¢ Pick Four, which will be offered on the final four races daily on the Wednesday through Sunday cards.

The bet, which is a tweak on the track's previous $1 Pick Four, first surfaced at Keeneland in Kentucky in 2007 and has met with pari-mutuel success at several other tracks, including Churchill Downs. It requires players to pick the winners of four consecutive races.

Del Mar will feature the standard win, place and show wagering on all its races, as well as the following "exotic" bets:

The $2 Pick Six (on the day's final six races), $2 Rolling Double (on all races but the last), $2 Quinella (all races), $2 Parlay, $1 Rolling Pick Three (starting with the first race and ending with the last three), $1 Super High Five (on the day's final race), $1 Place Pick All, Exacta (all races), Trifecta (all races with at least six betting interests) and the minimum 10¢ Superfecta (races with at least eight betting interests).

The track's betting "exotics" are relatively simple to understand: The Pick Six requires picking the winners of six straight races. A Daily Double requires picking the winners of two consecutive races. A Quinella requires picking the first two horses (in either order) in one race. An Exacta requires picking the first two horses (in exact order) in one race. A Trifecta requires picking the first three horses (in exact order) in one race. A Parlay requires the picking of at least two consecutive winners, with the winnings from the earlier bet(s) going back on the subsequent race(s). A Pick Three requires picking the winners of three consecutive races. A Superfecta requires picking the first through fourth horse in a single race in correct order. A Super High Five requires selecting the first through fifth horse in a single race in correct order.

Del Mar's 37-day meeting begins Wednesday, July 21 and runs through Wednesday, September 8. Racing will be conducted Wednesdays through Sundays.

One thing the 50 cent 4 does help with is when there are a couple legit long ones in a couple races and you want to go an extra horse deep.