I Cryptic

[stoatie2011]

14d Actor, initially no great shakes, gathering rising support (9) T-------N
10a Dish will turn heads, touring California (7) --A----.
17d Chap spies Virginia first of all in European city (8) -------A.

Many thanks, Danny.

[bookbinder]

14d might be tragedian?

[bookbinder]

17d Valencia

[shooty]

tragedian as Bookbinder said.

initially no = N + (anag of) GREAT (anag these) + AID (rising)

[bookbinder]

10a scallop.
DISH = scallop; thin slice of meat (esp. veal) usually fried or broiled.
Turn heads = heads/polls. So, turn POLLS = S LLOP
Touring (going round) California = CA
S CA LLOP.