diff --git a/cmd/schedule.go b/cmd/schedule.go
index 733ac1b..9c4135e 100644
--- a/cmd/schedule.go
+++ b/cmd/schedule.go
@@ -27,28 +27,7 @@ import (
 
 var date string
 var team teamFlag
-
-var sport string
-var sportIDs = map[string]statsapi.SportID{
-	"mlb":        statsapi.MLB,
-	"aaa":        statsapi.TripleA,
-	"aa":         statsapi.DoubleA,
-	"higha":      statsapi.HighA,
-	"a":          statsapi.SingleA,
-	"rookie":     statsapi.Rookie,
-	"winter":     statsapi.Winter,
-	"milb":       statsapi.MILB,
-	"indie":      statsapi.Independent,
-	"negro":      statsapi.Negro,
-	"kbo":        statsapi.Korea,
-	"npb":        statsapi.NPB,
-	"int":        statsapi.International,
-	"int18u":     statsapi.International18U,
-	"int16u":     statsapi.International16U,
-	"intamateur": statsapi.InternationalAmateur,
-	"college":    statsapi.College,
-	"hs":         statsapi.HighSchool,
-}
+var sport sportFlag
 
 func schedule(cmd *cobra.Command, args []string) {
 	var teamId string
@@ -60,9 +39,9 @@ func schedule(cmd *cobra.Command, args []string) {
 
 	var sportId string
 	if sport == "" {
-		sportId = string(sport)
+		sportId = strconv.Itoa(int(statsapi.MLB))
 	} else {
-		sportId = strconv.Itoa(int(sportIDs[sport]))
+		sportId = strconv.Itoa(int(sportIDs[string(sport)]))
 	}
 
 	sched, err := statsapi.RequestSchedule(sportId, teamId, date)
@@ -95,5 +74,5 @@ func init() {
 	// is called directly, e.g.:
 	scheduleCmd.Flags().VarP(&team, "team", "t", "team to get schedule for")
 	scheduleCmd.Flags().StringVarP(&date, "date", "d", "", "date to get schedule for (YYYY-MM-DD)")
-	scheduleCmd.Flags().StringVarP(&sport, "sport", "s", "mlb", "sport to get schedule for")
+	scheduleCmd.Flags().VarP(&sport, "sport", "s", "sport to get schedule for")
 }
diff --git a/cmd/sportflag.go b/cmd/sportflag.go
new file mode 100644
index 0000000..4fe4744
--- /dev/null
+++ b/cmd/sportflag.go
@@ -0,0 +1,74 @@
+/*
+Copyright © 2024 filifa
+
+This program is free software: you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+package cmd
+
+import (
+	"errors"
+	"strings"
+
+	"scm.dairydemon.net/filifa/mlblive/cmd/internal/statsapi"
+)
+
+var sportIDs = map[string]statsapi.SportID{
+	"mlb":        statsapi.MLB,
+	"aaa":        statsapi.TripleA,
+	"aa":         statsapi.DoubleA,
+	"higha":      statsapi.HighA,
+	"a":          statsapi.SingleA,
+	"rookie":     statsapi.Rookie,
+	"winter":     statsapi.Winter,
+	"milb":       statsapi.MILB,
+	"indie":      statsapi.Independent,
+	"negro":      statsapi.Negro,
+	"kbo":        statsapi.Korea,
+	"npb":        statsapi.NPB,
+	"int":        statsapi.International,
+	"int18u":     statsapi.International18U,
+	"int16u":     statsapi.International16U,
+	"intamateur": statsapi.InternationalAmateur,
+	"college":    statsapi.College,
+	"hs":         statsapi.HighSchool,
+}
+
+type sportFlag string
+
+func (t *sportFlag) String() string {
+	return string(*t)
+}
+
+func (t *sportFlag) Set(v string) error {
+	var err error
+	v = strings.ToLower(v)
+
+	if v == "" {
+		*t = sportFlag(v)
+		return nil
+	}
+
+	_, ok := sportIDs[v]
+	if !ok {
+		allowed := allowedFlags(sportIDs)
+		allowedList := strings.Join(allowed, ", ")
+		err = errors.New("sport must be one of " + allowedList)
+	} else {
+		*t = sportFlag(v)
+	}
+	return err
+}
+
+func (t *sportFlag) Type() string {
+	return "sportFlag"
+}