13th Hole Siege

The 13th Hole Siege was the takeover of a popular sledding hole by the Whirley Street Kids as said in book 13 "The Meltdown".

The Siege
Last winter, as said by Greg in book 13, everyone used to sled on a 'legendary' sledding hill in a golf course at the Country Club during the winter. However, it was considered trespassing and Rowley was scared he would be caught and they would revoke his Country Club membership.

After sledding it several times, with a new lump at the bottom making kids get some serious air, the Whirley Street Kids took over and drove the other kids off.

After getting bored with the hill, The Whirley Street Kids went away and began fighting in The Battle of Surrey Street.

Trivia

 * As said by Greg, the siege happened a year before (the Battle of Surrey Street) so it happened around the same time as Cabin Fever, which contradicts the fact he was stuck inside his home as it snowed.
 * No kids were caught by The Country Club