Line judge or linesman or something along those lines. They stand at the back (opposite the net) left corner of each side of the court.
Isle or island
Allen Key
Robert L. Osgood was Helen Keller's assistant after Anne Sullivan
The dregs are also called the lees.
That is called the Local Group.
THe berry your're looking for is loganberry.
a piece of wood is called log
He was angry because you must have known the rules of the game.
A beverage starting with l is lemontea or lemonade
l want to work there
Robert L Osgood
There are only two letters starting with L that I can think of; the Letter of the alphabet, which is "L" and the Word "Letter." As "Letter" is longer than "L" I can only assume that the word "Letter" is the longest letter starting with L. lymphoblastic leukemia