diff --git a/sys/netinet/in_kdtrace.h b/sys/netinet/in_kdtrace.h
--- a/sys/netinet/in_kdtrace.h
+++ b/sys/netinet/in_kdtrace.h
@@ -286,6 +286,7 @@
 
 SDT_PROBE_DECLARE(mib, tcp, count, tcps_sack_recovery_episode);
 SDT_PROBE_DECLARE(mib, tcp, count, tcps_sack_rexmits);
+SDT_PROBE_DECLARE(mib, tcp, count, tcps_sack_rexmits_tso);
 SDT_PROBE_DECLARE(mib, tcp, count, tcps_sack_rexmit_bytes);
 SDT_PROBE_DECLARE(mib, tcp, count, tcps_sack_rcv_blocks);
 SDT_PROBE_DECLARE(mib, tcp, count, tcps_sack_send_blocks);
diff --git a/sys/netinet/in_kdtrace.c b/sys/netinet/in_kdtrace.c
--- a/sys/netinet/in_kdtrace.c
+++ b/sys/netinet/in_kdtrace.c
@@ -294,6 +294,7 @@
 
 MIB_PROBE_TCP(tcps_sack_recovery_episode);
 MIB_PROBE_TCP(tcps_sack_rexmits);
+MIB_PROBE_TCP(tcps_sack_rexmits_tso);
 MIB_PROBE_TCP(tcps_sack_rexmit_bytes);
 MIB_PROBE_TCP(tcps_sack_rcv_blocks);
 MIB_PROBE_TCP(tcps_sack_send_blocks);
diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c
--- a/sys/netinet/tcp_output.c
+++ b/sys/netinet/tcp_output.c
@@ -1037,6 +1037,9 @@
 			TCPSTAT_ADD(tcps_sndrexmitbyte, len);
 			if (sack_rxmit) {
 				TCPSTAT_INC(tcps_sack_rexmits);
+				if (tso) {
+					TCPSTAT_INC(tcps_sack_rexmits_tso);
+				}
 				TCPSTAT_ADD(tcps_sack_rexmit_bytes, len);
 			}
 #ifdef STATS
diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h
--- a/sys/netinet/tcp_var.h
+++ b/sys/netinet/tcp_var.h
@@ -1030,6 +1030,7 @@
 	/* SACK related stats */
 	uint64_t tcps_sack_recovery_episode; /* SACK recovery episodes */
 	uint64_t tcps_sack_rexmits;	    /* SACK rexmit segments   */
+	uint64_t tcps_sack_rexmits_tso;	    /* SACK rexmit TSO chunks */
 	uint64_t tcps_sack_rexmit_bytes;    /* SACK rexmit bytes      */
 	uint64_t tcps_sack_rcv_blocks;	    /* SACK blocks (options) received */
 	uint64_t tcps_sack_send_blocks;	    /* SACK blocks (options) sent     */
@@ -1088,7 +1089,7 @@
 	uint64_t tcps_tlpresend_bytes;	/* number of bytes resent by tlp */
 
 
-	uint64_t _pad[4];		/* 4 TBD placeholder for STABLE */
+	uint64_t _pad[3];		/* 3 TBD placeholder for STABLE */
 };
 
 #define	tcps_rcvmemdrop	tcps_rcvreassfull	/* compat */
diff --git a/usr.bin/netstat/inet.c b/usr.bin/netstat/inet.c
--- a/usr.bin/netstat/inet.c
+++ b/usr.bin/netstat/inet.c
@@ -783,11 +783,13 @@
 
 	p(tcps_sack_recovery_episode, "\t{:recovery-episodes/%ju} "
 	    "{N:/SACK recovery episode%s}\n");
- 	p(tcps_sack_rexmits, "\t{:segment-retransmits/%ju} "
+	p(tcps_sack_rexmits, "\t{:segment-retransmits/%ju} "
 	    "{N:/segment rexmit%s in SACK recovery episodes}\n");
- 	p(tcps_sack_rexmit_bytes, "\t{:byte-retransmits/%ju} "
+	p(tcps_sack_rexmits_tso, "\t{:tso-chunk-retransmits/%ju} "
+	    "{N:/tso chunk rexmit%s in SACK recovery episodes}\n");
+	p(tcps_sack_rexmit_bytes, "\t{:byte-retransmits/%ju} "
 	    "{N:/byte rexmit%s in SACK recovery episodes}\n");
- 	p(tcps_sack_rcv_blocks, "\t{:received-blocks/%ju} "
+	p(tcps_sack_rcv_blocks, "\t{:received-blocks/%ju} "
 	    "{N:/SACK option%s (SACK blocks) received}\n");
 	p(tcps_sack_send_blocks, "\t{:sent-option-blocks/%ju} "
 	    "{N:/SACK option%s (SACK blocks) sent}\n");