Across
Very tired club athlete (10)
I haven't cracked this one yet — but Fifteensquared have:
Shot(=very tired) + putter(=golf club)
Hot show becomes a musical (4)
Individual pocketing hard small stones (7)
Staples possibly used for some Cassatt works (7)
Fashion house manufactured a nice bag featuring a logo at the front (10)
I haven't cracked this one yet — but Fifteensquared have:
(A nice bag)* around (a l[ogo])
Leaves the bar oddly (3)
I haven't cracked this one yet — but Fifteensquared have:
Odd letters of t h e b a r
Central components of forward country? (6)
Accommodation on moorland proved to be a letdown (8)
I haven't cracked this one yet — but Fifteensquared have:
Flat(=accommodation) after fell(=moorland)
Heaven is located within a row of shops (8)
I haven't cracked this one yet — but Fifteensquared have:
Is in parade
Big-picture ultimately utilitarian European leader (6)
I haven't cracked this one yet — but Fifteensquared have:
Macro(=big-picture e.g. macro-economics) + [utilitaria]n
Large amount of data about a talk (3)
I haven't cracked this one yet — but Fifteensquared have:
GB(=gigabyte) around a
Each country’s restricting the onset of major emissions (10)
I haven't cracked this one yet — but Fifteensquared have:
(Ea{ch) + nation's) around m[ajor]
Capital from independent firms invested in Northern Ireland and America (7)
I haven't cracked this one yet — but Fifteensquared have:
(I{ndependent} + Co{mpanies}) in N{orthern} I{reland} + A{merica}. Nicosia is a the capital of Cyprus.
Title mostly covering every single coaching role (7)
I haven't cracked this one yet — but Fifteensquared have:
Ter[m](=title) around each(=every single)
It contains antioxidants and saccharin occasionally (4)
I haven't cracked this one yet — but Fifteensquared have:
Even letters of s a c c h a r i n
Corrupt metal starts to affect smartphone charger? (10)
I haven't cracked this one yet — but Fifteensquared have:
Lead(=metal) + a[ffect] s[martphone] + tray, a charger being a type of tray.
Down
Casual get-together aboard cruise ship? (4)
I know a smashing area somewhere in the Pacific (7)
Inflexibility of editor involved in disastrous design phase (13)
Fish around river channel (6)
Stresses seem periodically to accompany developmental stages (8)
I haven't cracked this one yet — but Fifteensquared have:
Even letters of s e e m + phases(=developmental stages)
A tablet reconfigured for helping illegal activity (7)
Being at ease takes skill and going back to square one (10)
I haven't cracked this one yet — but Fifteensquared have:
Resting aound art(=skill)
Certain characters seen in San Marino and Vatican City? (13)
I haven't cracked this one yet — but Fifteensquared have:
CD/DD – San Marino and Vatican City, as well as being countries in their own right, are also their own capitals.
Support a government with a spread of information (10)
Key bacteria finally found on dead mushroom (8)
I haven't cracked this one yet — but Fifteensquared have:
Esc(=key, the Escape key) + [bacteri]a + late(=dead). Mushroom here is used as a verb e..g. to mushroom out of control.
Novel about bishop heading off for holy city (7)
I haven't cracked this one yet — but Fifteensquared have:
Re(=about) + b[ishop] + [M]ecca(=Islamic holy city)
Was the lead singer a big stockholder? (7)
I haven't cracked this one yet — but Fifteensquared have:
Not sure on this – seems to be ran(=was) + Cher(=lead singer)
Salted nuts didn’t run out (6)
Pretentious group of people lacking power (4)
I haven't cracked this one yet — but Fifteensquared have:
[P]arty
Type letters or click words in the clue