Here are map & directions to the Phasakan Sports Center pitch.

The map is on their website at:
    ==> http://www.phasakansport.com/index.php?lay=show&ac=article&Id=538832386


It is in one of the sois of Ladpraw Soi 101. So, you can get there all the way from the beginning of Ladpraw (from Jatujak and Central Ladpraw area), or better yet, you can take the Ramintra Expressway if you're coming from the City.

Here we go:
1) Take the Ramintra Express towards Ramintra Road.
2) Along the way, pass the Patanakarn Road exit, Rama-9 Road split, as well as Ladpraw Road exit.
3) Exit to Kaset-Nawamin Road.
4) As soon as you exit and coming down the exit ramp, stay on the right lane to make a U-turn using a unpaved access lane (under the Expressway) to immediately get back up on the Expressway, heading back (South) towards the town (no need to pay anything!).
5) Drive back another 1-2km, and take the Ladpraw Road exit.
6) Turn left onto Ladpraw Road to go out out-of-town direction (East).
7) Continue on down until Ladpraw Soi 101, and turn left into there.
8) Drive about 2-3km in Soi 101, until you see a large size temple complex on your left-hand-side with a 4-5m tall clock tower in front of it.
9) Turn into the large soi on the right-hand-side 20m past the clock tower (the soi is called Thanon Pao Khaeo). It's a wide 4-lane soi, and you will see plenty of night clubs and restaurants along the road side.
10) Continue about 1km, and look for a football pitch on your left-hand-side called "Phasakan Sports Center". There are plenty of large advertising signboards all around the pitch, so can't miss it.
11) There is a carpark between the pitch and the road, and on the left side of the complex there is a club house. Either park in the carpark (if there is space), or on the right or left side of the main road.