diff --git a/api/src/event.rs b/api/src/event.rs
index 91ff0bf..8164428 100644
--- a/api/src/event.rs
+++ b/api/src/event.rs
@@ -25,6 +25,9 @@ pub struct ResetEvent {
     /// The top miner of the round.
     pub top_miner: Pubkey,
 
+    /// The number of miners on the winning square.
+    pub num_winners: u64,
+
     /// The total amount of SOL prospected in the round.
     pub total_prospects: u64,
 
diff --git a/program/src/reset.rs b/program/src/reset.rs
index 0ad7ca5..b32472e 100644
--- a/program/src/reset.rs
+++ b/program/src/reset.rs
@@ -55,6 +55,7 @@ pub fn process_reset(accounts: &[AccountInfo<'_>], _data: &[u8]) -> ProgramResul
                 end_slot: board.end_slot,
                 winning_square: winning_square as u64,
                 top_miner: board.top_miner,
+                num_winners: 0,
                 total_prospects: board.total_prospects,
                 total_vaulted: board.total_vaulted,
                 total_winnings: board.total_winnings,
@@ -151,6 +152,7 @@ pub fn process_reset(accounts: &[AccountInfo<'_>], _data: &[u8]) -> ProgramResul
             end_slot: board.end_slot,
             winning_square: winning_square as u64,
             top_miner: board.top_miner,
+            num_winners: square.count[winning_square],
             total_prospects: board.total_prospects,
             total_vaulted: board.total_vaulted,
             total_winnings: board.total_winnings,