Variety Cryptic Crossword: Cryptic Tennis

Crossword: Cryptic Tennis by Hex
I solve a variety cryptic crossword with help from the live chat on Twitch.
Instructions:
THIS puzzle's grid represents a tennis court,
with heavy lines demarcating its sections
rather than the beginnings and ends of entries.
Clue answers should be entered without regard
to bars, starting in the designated squares.
Each section contains one square whose Across
and Down letters are different. These letter
pairs form a sort of connect-the-dots sequence
that bounces back and forth across the net
(shaded central column). Starting with the
leftmost pair, remove one letter (from the Down
entry in this case, but it may be either
thereafter) and circle its duplicate among the
right side's pairs. Remove the other letter
from the second pair and circle its double on
the left side. (There may be more than one
double, but only one is correct.) Continue in
this manner until ten letters have been removed
and ten circled. Start with the leftmost circled
letter and repeat the bouncing trail to form an
appropriate two-word phrase. To complete the
puzzle write that phrase in the shaded column.
Answers include nine capitalized words.