Sorry if this has already been brought up, but are collared shirts required?

Thanks!

3.4. Dress Code
A. All competitors and staff are required to wear a shirt.
B. All competitors and staff are required to wear shoes or
other foot coverings. Players will not be allowed to play in
bare feet. Sandals or slides are allowed.
C. The following dress code for all competitors will be
enforced at all PDGA National Tour and Major Events. The
PDGA also recommends that this dress code be enforced
at Super Tour and lower tier events, but this decision lies
solely with the Tournament Director:
(1) All players in PDGA sanctioned competition and
tournament staff are expected to dress appropriately
and to maintain a clean and well-groomed appearance
at all event sites and associated functions.
(2) All players must wear a shirt covering their upper
chest area. A well-tailored shirt with a fold-down,
mock turtle, v-neck, crew neck, Henley, or zippered
collar, and with sleeves covering the part of the arm
from the shoulder to the elbow (commonly known as
the upper arm), shall be considered acceptable.
Women are also allowed to wear sleeveless shirts as
designated above.
(3) No tee shirts will be allowed, except for competitors in
the Junior and Amateur divisions during preliminary
rounds only. Juniors and Amateurs shall not wear tee
shirts during semifinal or final rounds. Crew neck or
V-neck shirts made of high-performance or high-tech
materials, such as Dry-Fit, Cool-Max, and others will
be allowed.
(4) Shirts that hang down lower than the bottom hemline
on the player�s shorts shall be tucked in.
(5) No ripped shirts, shorts, pants will be allowed on the
course. This includes unhemmed, torn or cut �vents�
at the shirt collar.
(6) No offensive, profane, or obscene slogans or logos
shall be allowed on any clothing. Junior players may
not wear slogans or logos referring to alcohol or
tobacco.
(7) This dress code will be in effect from start to finish at
each event, including all tournament rounds.

Thanks much!