| It makes a big bang, briefly |
TNT |
| Kid's polite (or sarcastic) affirmative |
YESMOM |
| Leak-preventing doc |
NDA |
| Letter before chi |
PHI |
| Lightning and Bolt, for two: Abbr |
EVS |
| Manu Raju's channel |
CNN |
| Marsh stalk |
REED |
| Mauna ___ |
KEA |
| MBA subject |
ECON |
| MLB player Shohei |
OHTANI |
| On the mark |
TRUE |
| Opponent |
RIVAL |
| Org. with a racket in its logo |
ATP |
| Overdone |
OLD |
| Parenthetical comment |
ASIDE |
| Phantom, or an airline |
SPIRIT |
| Pig's home |
STY |
| Reviews, as an Uber driver |
RATES |
| Ring behind the cornea |
IRIS |
| Run ___ (go berserk) |
AMOK |
| Scrape away |
ABRADE |
| Sealy competitor |
SERTA |
| See 19-Across |
BIRDIE |
| Sounds from kittens or rabbits |
PURRS |
| Sport with windmills, or a hint to understanding both parts of the starred clues' answers |
MINIGOLF |
| Square root of 57-Across |
ONE |
| Stadium sections |
TIERS |
| Star that gets very bright |
NOVA |
| Sticky substance |
GOO |
| Swear words? |
IDO |
| Tazo drink |
TEA |
| The "S" of iOS: Abbr |
SYS |
| Theme park transport |
TRAM |
| Trend that comes and goes |
FAD |
| Trendy berry |
ACAI |
| Unable to come any closer |
ATBAY |
| Useful hint |
TIP |
| Warning by a risque link |
NSFW |
| Wax-wrapped cheese |
EDAM |
| Wee, cutely |
ITTY |
| ___-hoo (chocolatey drink) |
YOO |