diff --git a/l2geth/internal/ethapi/api.go b/l2geth/internal/ethapi/api.go
index 7b765cbe30bc7..a2a1853c4bc20 100644
--- a/l2geth/internal/ethapi/api.go
+++ b/l2geth/internal/ethapi/api.go
@@ -1740,33 +1740,6 @@ func (s *PublicTransactionPoolAPI) SendRawTransaction(ctx context.Context, encod
 	return SubmitTransaction(ctx, s.b, tx)
 }
 
-// SendRawEthSignTransaction will add the signed transaction to the mempool.
-// The signature hash was computed with `eth_sign`, meaning that the
-// `abi.encodedPacked` transaction was prefixed with the string
-// "Ethereum Signed Message".
-func (s *PublicTransactionPoolAPI) SendRawEthSignTransaction(ctx context.Context, encodedTx hexutil.Bytes) (common.Hash, error) {
-	if s.b.IsVerifier() {
-		return common.Hash{}, errors.New("Cannot send raw ethsign transaction in verifier mode")
-	}
-
-	if s.b.IsSyncing() {
-		return common.Hash{}, errors.New("Cannot send raw transaction while syncing")
-	}
-
-	tx := new(types.Transaction)
-	if err := rlp.DecodeBytes(encodedTx, tx); err != nil {
-		return common.Hash{}, err
-	}
-
-	if new(big.Int).Mod(tx.GasPrice(), big.NewInt(1000000)).Cmp(big.NewInt(0)) != 0 {
-		return common.Hash{}, errors.New("Gas price must be a multiple of 1,000,000 wei")
-	}
-	// L1Timestamp and L1BlockNumber will be set by the miner
-	txMeta := types.NewTransactionMeta(nil, 0, nil, types.SighashEthSign, types.QueueOriginSequencer, nil, nil, nil)
-	tx.SetTransactionMeta(txMeta)
-	return SubmitTransaction(ctx, s.b, tx)
-}
-
 // Sign calculates an ECDSA signature for:
 // keccack256("\x19Ethereum Signed Message:\n" + len(message) + message).
 //
diff --git a/packages/data-transport-layer/src/services/l1-ingestion/handlers/sequencer-batch-appended.ts b/packages/data-transport-layer/src/services/l1-ingestion/handlers/sequencer-batch-appended.ts
index 5ecf06fdc0cf9..c185520562a73 100644
--- a/packages/data-transport-layer/src/services/l1-ingestion/handlers/sequencer-batch-appended.ts
+++ b/packages/data-transport-layer/src/services/l1-ingestion/handlers/sequencer-batch-appended.ts
@@ -243,6 +243,31 @@ const maybeDecodeSequencerBatchTransaction = (
   let decoded = null
   let type = null
 
+  try {
+    // Try to decode as RLP first. This function will throw if the transaction can't be properly
+    // decoded as RLP and we'll get bumped down to the next set of possible decodings.
+    const decodedTx = ethers.utils.parseTransaction(transaction)
+
+    return {
+      type: 'EIP155',
+      decoded: {
+        nonce: BigNumber.from(decodedTx.nonce).toNumber(),
+        gasPrice: BigNumber.from(decodedTx.gasPrice).toNumber(),
+        gasLimit: BigNumber.from(decodedTx.gasLimit).toNumber(),
+        target: toHexString(decodedTx.to), // Maybe null this out for creations?
+        data: toHexString(decodedTx.data),
+        sig: {
+          v: BigNumber.from(decodedTx.v).toNumber(),
+          r: toHexString(decodedTx.r),
+          s: toHexString(decodedTx.s),
+        },
+        type: 0, // EIP155 legacy holdover.
+      },
+    }
+  } catch (err) {
+    // Do nothing, fall back to legacy decode.
+  }
+
   try {
     const txType = transaction.slice(0, 1).readUInt8()
     if (txType === TxType.EIP155) {